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Frequently Asked Questions

Light is essential to our vision and plant growth but the way our eyes and plants react to this light are entirely different processes. While the overall physics and science of lighting can be complex we’re going to reduce it to it’s bare elements here and primarily concentrate on the important plant/light interactions and how we measure that light.

WAVES: All light consists of electromagnetic waves in a spectrum that range from the low end ultraviolet (UV) to the high end infrared (IR) of the spectrum. The wavelength is measured in nanometers (nm) and consists of both visible and invisible light.

PARTICLES: Light is measured in PHOTONS which are a quantum or individual unit. Since individual photons possess tiny amounts of energy, photons are measured in units of moles (mol), which are 6.02 x 1023 photons. Micromoles (µmol) are one-millionth of a mole.

QUALITY: Photons have different amounts of energy, determined by their wavelengths. Light quality is the relative number of light particles at each wavelength. Light quality refers to the spectral distribution of light, or the relative number of photons of each portion of the spectrum, both visible and invisible that our light emits.

PAR LIGHT: During the photosynthetic process where the plant turns light into its energy it requires certain wavelength spectrums which we refer to as Photsynthetic Active Radiation or PAR for short. While PAR light spectrum ranges between 380-720 nm the region brightest to human vision (555 nm – Green, Yellow and Orange) has the least effect on plants. Consequently lightmeters that measure human vision levels (lumens,lux,footcandles) are not as effective as quantum type meters in determining if plant lighting levels (YPF, PPF) are actually being met.

MEASURING PAR: Quantum light meters differ from visible light meters in that they will tell you how much many photons are striking a square meter per second. This can be taken as a moment in time ‘incident reading’ at the plant and the unit of measurement will be measure in micromoles and expressed as µmol/m2. To give you some reference, using a quantum meter, sunlight on a cloudless day would measure 2,000 µmoles at the leaves.

Plant growth and development is significantly influenced be both the quantity and quality of the light it receives in turning that light, through a process known as PHOTOSYNTHESIS, into the energy which the plant requires to successfully mature.

Proper indoor grow light can also mitigate disease pressures that are often seen with plants grown outdoors. These plants are naturally affected by the number of cloudy days versus sunny days, humidity and leaf wetness where lack of solar radiation may subject the plants to disease cultivation that the indoor grower can influence with lighting and irrigation schedules.

  • Significantly reduces energy consumption
  • Contributes less than 1/3 the heat of comparable HID systems
  • Long life rated at 100,000 hours with only a 10% output depreciation at 70K hours
  • .99 High Power Factor
  • Less then 10% Total Harmonic Distortion
  • Spectral stability allows for repeatable crop production values to be maintained
  • Fastest Return on Investment (ROI)
  • Most sustainable lighting option for on/off grid applications
  • Lower CO2 emissions and carbon footprint
  • Instant on/off allows for lighting control systems utilization
Click Here for detailed information on our Plant Lighting Fundamentals page.

The built-in pre-conditioner (+/- 20v) in the generator provides for a stable internal supply voltage. Light output, consumed power and system efficacy vary by less than 2% as a result of voltage fluctuations. Additionally Inda-Gro Induction Grow Lights offer a .99 PF and less then 10% THD.

Click here to learn more about Transient Voltage Surge Suppressive Devices you can install to clean up supply power.

The lumen (PPF) output of an Inda-Gro induction lamp is expected to have depreciated after 100,000 hours to no less than 70% of the initial rated output. When any lamp is new, its light output is at the maximum. As the lamp operates, various processes (plasma, chemical, and thermal) within the lamp causes a gradual reduction of its lumen output. The degree to which the actual light out put decreases with operating time is referred to as lumen maintenance.

Typically 3 minutes warm up time is needed for 100% Lumen (PPF) Output. The output for an induction lighting depends on the mercury vapor pressure in the lamp which in turn is determined by the ambient temperature. These lamps use an amalgam system which results in low mercury vapor pressure before starting. However, an auxiliary amalgam is located in the discharge to ensure fast lumen run-up. When turned on, this auxiliary amalgam heats up, releasing mercury into the discharge. Light output quickly peaks and then dips slightly as mercury vapor pressure increases above optimum. After a few minutes, the mercury begins to go back to the main amalgam. The time required for the thermal equilibrium depends on ambient temperature and fixture design.

In a grow room environment the lamp would be operating in ideal ambient temperatures ~78-F (25-C) that let the surface of the glass get up to its full output operating temperature of 200-F (93-C) degrees.  Lamp output may be diminished if the garden has fans blowing directly over the surface of the glass.  Too much air movement will cool the glass surface and ideal glass surface temperatures won't be reached.  This can cause some lamps to appear dimmer than others.  Redirect the fans and the lamp output should go up.   



Inda-Gro Induction Lighting Systems are designed to have an average rated life of 100,000 hours at a maximum driver case temperature of 149 Deg F/ 65 Deg C. After 100,000 hours 50% of the drivers will be surviving (at 60,000 hours, 10% failures are expected).

An induction lamp can be operated in any position. In most cases though, the lamp should be mounted with the amalgam tip in the downward position. Because operating position has a slight effect on the amalgam tip temperature this should be considered when mounting the fixture.

An induction lamp system uses a technology of light generation that combines the basic principles of induction and gas discharge. Void of electrodes this technology delivers 100,000 hours of natural sunlight light spectrum's with rare earth horticulture blend phosphors for full PAR spectrum photosynthesis for plant growth.

The system is comprised of 5 components:

  1. 2.65 MHz High Frequency Generator (driver / ballast)
  2. Electromagnetic Coils (also called a Power Coupler)
  3. sealed Bi-Spectrum Electrodeless Flourescent Discharge Lamp (EFDL)
  4. fixture assembly
  5. Reflector – 99.7% Spectral Reflectance – The highest available.

NO. Lamps runs at 250 KHz which complies with FCC rules with no interference under normal circumstances. Inda-Gro fixtures also utilize frequency dampening materials to prevent RFI-EMF interference outside the fixture driver compartment.

Lamp: Although a very small amount of mercury is used, it is recommended to treat as small chemical waste. The lamp can be recycled together with other low-pressure mercury discharge lamps. Follow local regulations for disposal of this type of light source.

Driver: This component is a RoHS compliant electronic device, which can be disposed of with normal care. It is recommended to dispose of the driver as normal electronic waste, according to local regulations.

Higher wattages can start as low as 40 Deg F (-40 Deg C). While the lower wattages need to be a minimum starting temperature of -13 Deg F/ -25 Deg C.

Driver: temperature should never exceed 149 Deg. F (65 Deg C). Thus to maximize system life, ambient temperature of the driver should be kept as low as possible.

Lamp: temperature of the lamp mounting base of the induction core should never exceed 212 Deg F (100 Deg C).

Amalgam tip: temperature must be within the range of 131 Deg F to 257 Deg F 9 (55 Deg C to 125 Deg C) for optimal light output.

Our fixtures come with a standard NEMA 5-15P Plug on a 6 ft cord.  If you require special plug configurations or cord lengths we can accommodate those requests for an extra charge.  When requesting pricing please contact us with the NEMA Configuration identified on this chart.

We construct our lights so they may be installed in DAMP LOCATION environments such as in greenhouses. The following information applies to any type of light, HID, Induction, LED, or Plasma that would be installed in a greenhouse environment.

NATIONAL ELECTRICAL CODE (NEC) defines a DAMP LOCATION as a location where equipment will be installed that is between a DRY and a WET location. Electrical equipment mounted in DAMP LOCATIONS are protected from weather and not subject to saturation with water or other liquids but ARE subject to moderate degrees of moisture which require luminaires to be rated for that environment.

NEC SECTION 110-3B is critically important code rule because it states that manufacturers MAY NOT SELF-CERTIFY their products for the installation and application. SECTION 110-3B requires third party testing, verification, limitations, certification, listing and labeling of that equipment so that the end user, the building owner and the Authority Having Jurisdiction (AHJ), such as an electrical inspector, can easily verify that the equipment meets the minimum safety standards for that application.

OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) requires that any luminaires that are installed in a damp location be third party certified that they meet the criteria for installation in that environment. Once passed the manufacturer must mark and label each luminaire that it is rated for damp locations. This allows the Authority Having Jurisdiction (inspectors) and the property owner to confirm the product is suitable for installation in that environment. OSHA takes listing and certification of luminaires very seriously as they see the increased risks associated with unlisted products as preventable. Accordingly OSHA empowers the electrical inspectors to reject jobs with unlisted products and can place heavy fines on building owners and employers when unlisted products are found.

ELECTRICAL INSPECTORS AND OSHA: Electrical Inspectors have an ally in enforcing their local regulations and the National Electrical Code where there are requirements for products to be Listed and Labeled in accordance with Section 90-7 of the NEC. Electrical Inspectors are required to assure that all products installed in their jurisdiction are safe and comply with the NEC. To assure this compliance many Inspectors must rely on a label that appears on the product to make their determination of compliance. When the label does not appear the Inspector is usually left with the unpopular option of turning down the product or the installation.

This requires the Electrical Inspector not only to be very observant about the installation he/she is inspecting but also the products that are being installed. Additionally, he/she must also determine that the label is acceptable in his/her jurisdiction and the product is compliant with Section 110-3b of the NEC. If an unlisted product goes undetected and it is a Hazard, the Electrical Inspector could be held accountable. This is an unreasonable burden to be place on an inspector.

OSHA Electrical Standard (Subpart S) requires that all electrical products installed in the work place be listed, labeled or otherwise determined to be safe by a Nationally Recognized Testing Laboratory (NRTL). OSHA places the responsibility of this squarely on the Employer. OSHA, defines the building owner, facility or property owner as the employer.

The Electrical Inspector can require the contractor to remove an item not labeled in accordance with Section 90-7 or prevent the facility from opening, etc. OSHA, however can impose fines on the Employer of $7,000.00 to $70,000.00 per day for each violation. Often the Employer does not even know that a violation exists. OSHA’s involvement would be more effective than the authority an inspector may exert and would also be a major benefit in assisting an inspector with his/her legal responsibilities. The best thing an inspector can do is defer to OSHA the determination that a product legally complies with the standard and Section 90-7 of the NEC. Assuring that as many cord connected or installed devices are properly listed and labeled during an inspection is deferring a lot of the inspector’s responsibility over to OSHA.

These are some of the UL and OSHA recognized third party testing agencies. AHJ and end user confirmation of the certification can be found on the third party testing agencies website with which the manufacturer has listed that equipment.

Underwriters Laboratories Inc. (UL)
Intertek Testing Services (ETL)
Canadian Standards Association (CSA)

To confirm which agency the manufacturer has listed their products it is required that the manufacturer label their lights with the identity of the listing agency and the following marking information that would correspond with the same information that would be found on the listing agencies website:

Manufacturers Company Name
Model Designation
Factory Designation or Code
Date of Manufacture
Environmental Suitability (i.e. dry, damp or wet location)
Input limitations
Input voltage
Rated current or wattage

There are some fan cooled LED panel manufacturers who assert that they do not require damp location testing and certification of their products since they use listed components in their panel construction. This is not true. As you can see by the CSA STANDARDS for LED EQUIPMENT link these LED panels must be tested and listed for damp location environments as a whole product or in its End Use form. This is described in detail in section 1.3.1 (end use testing), 9.12.1 (humidity exposure), 9.4 (dielectric voltage withstand test for LED panels marketed expressly for damp location installations, and lastly section 10 where each fixture must bear SPECIFIC MARKINGS which proves the product has been tested and verified as acceptable for the environment it is being installed in. Without DAMP LOCATION certification and labeling these products are DRY LOCATION rated only as per OSHA, NEC and third party testing and verification processes.

Click here to see CSA Standard C22.2.250-13-12EN
Click here to see UL 1598 Standards for Wet and Damp locations Luminaires
Click here to see OSHA Standards for Construction Materials Safety and Health Workplace Inspections.

If your light quits working some simple troubleshooting and diagnostics you can do are outlined here.

For instructions on lamp replacement, click here.

As the cost of electrical energy costs continue to rise, growers are increasingly drawn to technologies that will allow them to operate at greater energy and life span efficiencies while maintaining or even improving upon crop qualities and times to harvest.  It is up to lighting manufacturers to be responsible and provide the end user with factual statements of values and not exaggerate or misstate their products capabilities.

 LED grow light manufacturers tend to advertise aggressively and make claims that their lights can deliver better crop results for far less energy than all other technologies, including induction lighting. When a manufacturer makes these types of revolutionary product claims it pays to be skeptical and to really research the data to see if the claims are even remotely believable. To that end you'll find an in-depth analysis at the bottom of this page where we examine the product information sheets of several leading LED grow light manufacturers to see how their claims measure up to the science.

LED's don't produce any heat. 

This is simply not true. Consider that only about 20% of an LED lamps energy is utilized for actual plant growth the rest is trapped as heat within the lamp housing.  That heat has to be removed from the housing or electronic components that drive the LED's will burn up.  Also the amount of heat generated by an LED is also directly proportional to the LED power levels. If you want to prove this to yourself try taking a Low Power 5mm LED array, wrap them in a towel and see how will quickly they’ll heat up since the heat would have nowhere to go. So while an LED won’t run as high a temperature as an HID lamp that creates both convection and radiant heat an LED does create convection heat and that heat still contributes to increased ambient room temperatures.

LED's don't waste energy because they only emit the spectrums your plants need.

Considering that sunlight is the broad spectrum light source and it has supported a variety of plant species for nearly 4 billion years, it would be reasonable to assume that the plant/sun relationship is both a dynamic and an intimate one.  As a result of LED's being narrow spectrum, LED lighting manufactures tend to reduce the importance of the natural symbiosis that occurs between broad spectrum lighting and plants by reducing the importance of certain spectrums or worse, eliminating them altogether.  

When comparing flowering results under narrow spectrum LED lights with broader spectrum HPS lights, studies such as the Emerson Effect, have shown that the broader spectrum lamp source will benefit the plants natural photosynthetic processes.  When one widens the spectrum of the HPS lamp by including a Metal Halide lamp at flower many growers have seen crop quality increases as the plants are exposed to UV-B spectrums from the Metal Halide lamp that are missing in the HPS lamp.  This is precisely why we at Inda-Gro employ broad spectrum phosphors that allow our single induction lamp to be used from propagation through the flowering cycle.

LED manufacturers who rely solely on Chlorophyll Absorption Charts and don’t reference Net Photosynthetic Action Spectra data, or accept the Emerson Effect, do so because it’s not in their best commercial interest's to do so.  To illustrate this point you will see by the Emission and Sensitivity Curve chart on the right we show a plant sensitivity curve in black that shows the regions this plant would be absorbing energy in the wavelengths it requires for optimum growth. Next you can see by the regions the HPS lamp emits it covers a broader section under the sensitivity curve than the LED lamp shown in the red line. The LED by virtue of it's narrow bandwidth, would claim it is more energy efficient as they don't waste light unnecessarily in the least important 520-610 regions.  With that statement the manufacturer is being disingenuous since these are not regions that can be completely ignored in the interest of promoting energy efficiencies over plant response or competing technologies.   

The other problem that LED manufacturers face when relying solely on the chlorophyll absorption charts to promote their spectral values is that these ranges are set for isolated chlorophyll molecules suspended in a solvent and do not reflect total photosynthetic activity. Even within the Chlorophyll Absorption Charts, shown below, different solvents will give slightly different numbers.

LED's are better at directing their light to the canopy.

This is not necessarily a good thing.  That intensity can burn sensitive canopy leaves and create necrosis.  Also, as we have previously discussed,  the intensities reaching the canopy leaves are usually narrow spectrum.  When one takes into consideration the entire spectral width that a plant would be exposed to under sunlight we have to consider what an LED offers that would simulate the characteristics of the sun in an indoor gardening environment.  By their very nature LED's will emit a peak wavelength and will quickly fall off of that peak to a 1/2 peak of 10 nanometers on either side of that peak or 20 nanometers 1/2 peak bandwidth. 

Since plants absorb light within the 400-700 nm bandwidths for an LED to direct narrow spectrums of light instead of the broader spectrums like they would see in nature. The lack of spectrums may create stress conditions in the plants that inhibit normal photomorphogenisis that would not be seen under broad spectrum light source distribution. Narrow spectrum, highly directional LED's are inherently incapable of emitting the homogenous blend of spectrums as they would see in nature.

To illustrate our point about how much energy that LED will need to emit and then to direct that light to the canopy we can take a look at a project where leafy green crops are being grown under LED.  Ideally these plants would optimize crop production values with an accumulated amount of light at the canopy of 20 Moles/day.  This project was retrofitted to utilize LED bars that utilize 5 watt diode array's spaced at  approximately 4" on center.  The bars are placed at 24" on center which would cover a 2' x 4'grow area.  The manufacturer specifies that each F3 diode array emits a PPF of 7.5 uMole/s.  There are 12 ea.,  F3 arrays per 4 ft strip which provides a PPF of 90 uMole/sec over the entire length of the bar.  With what appears to be a 24" center to center spacing on the bars we can calculate that each 4 foot bar is emitting an average canopy PPFD @ only 121 uMol/M2-S.  

This is not alot of energy when you consider that leafy green plants optimize crop production values in the 20 Moles/Day regions of daily light absorbed or Daily Light Integral (DLI).  To meet a 20 Moles/Day DLI it would take a reading of 400 uMol/M2-S over a 14 hour photoperiod to achieve that value.  The 121 uMol/M2-S these LED strips emit, provide the plants with only 10 Moles/Day providing they are ran on a 24 hour lights on cycle.  What this amounts to is that the NeoSol DS would be meeting the very minimum accepted DLI/PPFD intensity levels for these crop types if they are ran continuously.

 
So how much energy does an LED need to meet optimum crop production values?
 
If you were take a 100 watt LED lamp putting out lighting levels of roughly 140 uMol/sec how far does that 140 uMol/sec of light take you? To put that energy into perspective, full sunlight is 2000 uMol/meter^2/sec.  As plants have evolved under these sunlight intensities the photo saturation point for many food crops is around 1000 uMol/meter^2/sec and most food crops thrive at 500 uMol/meter^2/sec especially in flowering. So for that 100 watt LED to reach an intensity of 500 umol/meter^2/sec would cover an area of three square feet (21" x 21"). So while the 100 watt LED lamp can definitely grow plants in a smaller area,  in a larger area, the rate of photosynthesis will proportionally go down.

LED's last longer than any other lamp technology.

Most LED grow light manufacturers will claim their lamps will last for a 50,000 hour lifespan. We’ve even seen others that have advertised 100,000 hour lifespans. To that I can only say that Chinese made LED lamps have had a very poor track record in meeting the advertised lifespans.  When they do fail early the warranty claims tend to be denied and blamed on a customer responsible heat management issue. Compounding these issues is that Chinese specifications or 'white sheets' are not always reliable.


For the grower to make an informed decision regarding the lifespans of that particular manufacturers LED lamp, they’ll want to identify two things from the white sheets and having been confirmed by independent testing labs;

  1. (L70) What is the Lumen Maintenance Level? This will be expressed as the L70 measurement and will be represented in hours and is the point where the LED lamps are giving off only 70% of their initial lumen output when new. Below this point they are considered ‘failed’ and should be replaced.
  2. (B50) What is the failure (mortality rate)? This is a statistical measurement of when 50% of the new LED lamps have fallen below the L70 lumen output threshold levels.

As a rule; the harder that you drive a LED the shorter its L70/B50 life will be as the higher temperatures lead to shorter lifespans. This is a hidden cost that one must consider when making a long term capital investment in an LED lighting system that costs anywhere from between $3-5 per watt.   When an LED does fail it affects your plants health with lighting downtime. To keep the downtime to a minimum and to get the LED grow lights back on the plants you have options; make the repairs yourself or return it to the manufacturer for the repair.  If you have a replacement LED lamp and are able and willing to replace the failed lamp, which has been soldered onto the fixtures circuit board. Assuming you can get the proper replacement part you’ll have some down time while you install the replacement LED lamp.  Otherwise you’ll be sending the entire fixture back to the manufacturer and if it’s still within the warranty period, would hopefully make the timely repair or replacement without having to ‘regretfully inform you that the fixture is no longer within warranty period’ or determine ‘customer responsible failure not covered under warranty’.

Of note: on March 18, 2010 the US AIR FORCE issued a memorandum in which they removed LED lamps as an option for energy retrofit area lighting projects as a result of many of the LED installations having proven themselves to not have delivered sufficient lumen levels and not having met the published L70 and B50 standards within previous installations.

Conclusions:

We’ve found that LED's work very well in triggering certain narrow spectrum photochemical responses and in areas where the lamp to canopy spacing is close due to shelve spacing.  But LED diodes by design will emit in narrow spectrums so they will be, when compared to a broad spectrum phosphor lamp such as ours, at a competitive disadvantage in emitting broad spectrums with enough intensity to optimize plant response over a large area.  We are of the opinion that hybridizing LED and Induction phosphors can broaden the spectrums with intensities that improve crop quality and yields while reducing energy consumption is the ultimate best use of these technologies.    
We could spend an eternity exposing all of the claims and exotic financial calculations we see made by various manufacturers regarding what they claim their LED grow lights are capable of.  In the interest of addressing some of what is out there we decided to pick three of the leading US manufacturers of horticultural LED grow lighting products and take the reader through a technical analysis of their statements from information which can be found on their websites.  The focus of this analysis is help the reader determine the accuracy and consistency of claims, background data supporting claims, and general reasonability of the claims these manufacturers are making.


Click the manufacturers logo to read the analysis


Both of these systems utilize electrodeless magnetic coils to excite the gas in the lamp vacuum with the main differences being that the plasma systems are clear lamps utilizing no phosphor and they have significantly higher core temperatures of over 720 celsius with lamp lifes usually around 30,000 hours. However either type of system operates at low temperatures which does not contribute added heat within the room with the lumens per watt or efficacies being similar as well.

The PAR analysis of the Plasma fixtures indicates excellent UV values for the clone and vegetative stages with sustained spectral levels up to the 550 nanometer range then rapidly falling off spectrums that are necessary for maximum chlorophyll absorption at the flowering and budding stages from the 600 -700 nanometer ranges.

We’re very excited by the benefits and efficiencies of the electrodeless lamp technologies. As it pertains to plant lighting technologies we do not see the current state of plasma after factoring purchase costs, lamp lifespan, PAR ranges, canopy penetration and lack of reference grows would give us reason to endorse plasma as a replacement over fluorescent induction grow light systems whereby phospors blends can create UV/IR ranges that are delivering 95%+ PAR levels at less cost and for longer life spans then plasma systems.

Having been indoor gardeners since the early 1970's we'd seen a lot of different products and technologies come and go but it was our 20 years experience as a Kohler Power Systems dealer and the electrical/electronic controls used in those systems for back up power generation that it got us looking for ways to improve upon the energy efficiencies of indoor grow lights. After having trialed all of available grow light technologies on the market at that time we kept coming back to Tesla's EFDL lamp design and what we could accomplish with the use of this inherently efficient, long life, stable spectrum, low heat technology. 

While the induction lighting technology is over 100 years old we really were the first to realize that this was a technology that could be modified to work as an energy efficient alternative to HID for indoor garden environments.  With our initial product launch in April 2010 we have been at the forefront of induction lamp and control technologies that would reduce the cost to operate indoor gardens.  Our first Pro-400 series induction grow lamp was replaced in November 2011 with the release of our Pro-420 series lamp and fixture.  Since then additional products have been added that enhance crop production values while reducing operating costs.

We manufacture and warranty support all of our products in San Diego, CA with materials sourced from around the world.  When you contact Inda-Gro you will be speaking with people that have a first hand knowledge of our products and a background in plants and plant lighting.  Most orders are shipped the same day. 
When dealing with phosphor based technologies we do not believe in trying to soak our customers by perpetuating the myth that they must have one lamp for vegetative and a different lamp for flowering to be successful.  Now with HID lamps that two lamp approach would be true as these lamps do emit relatively narrow spectrums that concentrate their energy in known regions of chlorophyll sensitivity for either vegetative or flowering.  But with phosphors we can blend phosphors that emit a broad enough spectrum to accomplish full spectrum growth without putting the gardener through the unnecessary expense and hassle of relamping a big cumbersome induction lamp. 

Other reasons would include:

Internally, induction lamps convert the UVc wavelengths (100-280nm) and the phosphors coating the inside of the lamp photoluminesce the lamps output.  When you ask phosphors to convert that UVc energy into the Red regions (610-630nm) you have lost 60% efficiencies in doing so.  It simply does not make sense to ask any fluorescent based technology to produce a primarily red spectrum when the efficiencies are so low in doing so. 

Normal plant photomorphogenesis occurs under broad spectrum sunlight.  When subjecting plants to entirely different artificial spectrums that we 'believe' to be the plants required spectrums for that particular stage of growth but may not be will cause the plants to stress.  It is during this period that the plant is more likely to hermaphrodite, become diseased of infected.         

Plants exposed to broad spectrums of light through the entire plant cycle will grow to their greatest genetic potential.  Here you can see from these lab reports how when the same plant genetics/conditions have been grown under broad spectrum lighting the cannibinoid and terpene profiles were improved.   As can be seen by an independent lab analysis this is true even of a competing induction lamp mfg who sells one lamp for vegetative and another for flower.  Having to have one induction lamp for veg and another for flower is not only expensive and cumbersome if they have to be changed out, the reality is that the lab results, insofar as the quality finish goes, does not support the fundamental reason for having to use two lamps to get through a crop cycle.           

There is a perception that we as manufacturers should not change the paradigm too much.  Gardeners are used to using two lamps.  Subjecting them to a new technology such as induction and throwing a single lamp veg through flower approach would be too much to accept.  It fly's against the way things have always been done.  Well there is a legitimate reason for the two lamp solution with HID but there is no reason a phosphor based grow lamp needs to take that position.  

We believe we build a quality product at a fair price.  We also support our dealers and our customers with one of the best warranties on the market.  We know that if a problem were to occur with your light it can make a difference in your crops success.  We take that responsibility very seriously and prioritize any repairs that might be necessary to expedite that process.

It used to be that the old axiom 'you get what you pay for' could be applied to grow lights but this is an industry that you don't always get what you pay for.  There are competitors that charge considerably more for their products and the results do not warrant the extra expense.  In fact if their products were cheaper it would still not be a better value if crop returns suffer in comparison.  Also if the competitors rely on marketing strategies that have them comparing their products to Inda-Gro, makes claims that they are the only ones who have patents pending for agricultural induction lighting, that they are the only USDA approved induction grow light manufacturer, or that their lamps are better than the sun we would encourage a prospective buyer to do a bit more research into these claims.    

We believe that innovation and fair competition is what drives the market and ultimately brings the best value to the customer.  Be aware that there are competitors that don't innovate and will lift everything off of our website and call it their own, including pictures of our gardens that have the owners hand in the image, because it's easier to just copy the leader.  Below are two China direct, companies that have done this.  If this type of marketing seduces a buyer to follow through and purchase these lights based on the competitor claims of superiority and the results are less than satisfactory, please don't blame the technology.  It's really more a case of all induction grow lights not being created equal coupled with a dose of buyer beware. 

See CKRA Induction grow lights
See SuperTek Induction grow lights
In most cases yes.  The general rule of thumb to take advantage of utility rebates and tax incentives is that the new energy efficient lighting must replace a less efficient lighting system thereby reducing the load and the utility grid. 

We recommend visiting DSIRE USA and locate your utility provider to see what programs are offered in your area.  
We produce these electrode-less lamps in versions that allow them to be safely submerged directly underwater.  By doing so it brings a broad spectrum of light to both fresh and salt water plants which can significantly improve plant and coral growth over lamps that light from above the water or require waterproof housings which can reduce intensities and change the spectral distribution of the lamp.  We also have versions of these lamps that can be used to sterilize water or air based on their ability to produce UVc and ozone.  Contact us with your specific needs and we would be happy to discuss how these products can be used in your application.        

Inda-Gro
Blending the Art and Science of Indoor Gardening

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6176 Federal Blvd. San Diego, CA 92114
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