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Inda-Gro Pro420PAR Induction Grow Light

  • Nothing Grows like Inda-Gro Pro420PAR Induction, EFDL, Grow Lights.
Our Broad Spectrum Grow Lamps provide your plants the best horticultural lighting for explosive growth and high yields from a single lamp source. Not only will you get great results while saving energy, you will not have to swap bulbs from MH to HPS when going from growth to flowering, and you will not have to buy a new bulbs for 7-10 Years. Inda-Gro comes with a 10 year, pro-rated, warranty! You can learn much more by completing this slideshow.
  • Inda-Gro in action, an Aquaponic installation.
  • Tesla's Induction Lighting patents inspire the advanced technology behind Inda-Gro ProPAR Series Lamps. "Lightning in a bottle"! 

The Inda-Gro driver housing will run in the 46C (114.8F) range while the surface of the lamp will run in the 93C (199.4F) range. Compared to an HID lamp that runs @ 482C (899F), our lamps run substantially cooler than comparable HID grow lamp. Some users in very hot locales and in very small cabinets or short tents have chosen the Remote Option, due to space limitations, but it is not really recommended for spaces with sufficient air space.

In the answer section on his Video Spliff says, "this tent actually stayed very cool... day/night temps were targeted at 68F/75F and it took about 5 hours from lights on for the temp to rise to the day target."
  • We do not recommend the Remote Power Supply option, per say, the lamps run cool enough, as is,  this is offered for those who absolutely demand this option. We only see any real advantage of this option where space limitations are severe.

Due to the large number of orders for Inda-Gro's new Pfr Pontoon ADD-On, delivery of the Remote Power Supply Option May be delayed up to 3 weeks from the initial date of your order.  All other orders are generally fulfilled within 24 hrs.

The Remote Power Supply Option component view.
This option allows the power supply to be isolated from the lamps at distances of 10 or 20 feet,
this require a factory retrofit, the cable is specifically constructed for this  High Voltage lamp.
  • The specialized High Voltage impedance matched cable, custom built for each lamp. This is RF Engineer work. The end user can NOT do this or it will void the warranty. The remote driver assembly is a customized solution. The most common reason for this remote driver request is if the customer wants to eliminate the extra 6.65cm height that the driver housing represents.
  • One of the questions we're often asked is can you remote the driver (power supply) from the lamp housing? The short answer is yes but it is not as simple as adding an extension cord between the two. The cabling and connectors are special in that it has to insulate the EMI and the remote cable cannot change the critical impedance match required between the driver and the lamp assembly.
  • If this option is being considered to eliminate any heat that the driver (power supply) adds to the room than you should be aware that the driver housing will run in the 46C (114.8F) range while the surface of the lamp will run in the 93C (199.4F) range. Compared to an HID lamp that runs @ 482C (899F), our lamps run substantially cooler than comparable HID grow lamp. 

Some users in very hot locales and in very small cabinets or short tents have chosen the Remote Option, due to space limitations.
  • Inda-Gro uses rectangular tubes, these provide the best coverage for common agricultural use.
Inda-Gro's purpose built reflector housing optimizes the light these tubes produce.
  • Induction EDFL lamp and magnetic couplers are the core of the Inda-Gro magnetic induction lighting system.
  • Better Lamps make better plants!
  • Without seals, off and on does not cause the lamp to lose output.  When it is used up, in 70,000 hours or more, the small amount of mercury used can be safely recycled, just snap the little containing bulb off.
  • Electrode-less tubes with no seals insure a long life, strong magnetic fields make them operate at 95% efficiency and horticultural grade rare earth Phosphors provide high productivity.
  • Comparative Lumen deprecation schedules make Inda-Gro's long-life benefit more visually concrete.
  • Plant Lighting Spectrums.
  • Various Spectrum graphs and how they relate.
  • Kelvin values were first used for artists, designers and window dressers for visual communication.
  • Chlorophyll Absorption Chart.
  • PAR Quality Comparisons.
  • Inda-Gro's Broad Spectrum Daylight Series
  • Common Metal Halide and High Pressure Sodium lamp spectrum charts.
  • Standard Tri-Phosphor Blend charts.
  • Tri-Phosphor Blend Charts.
  • Photoperiods and plants.
  • Daylight Intervals for various Greenhouse plants.
  • More Daylight Intervals.
  • More Daylight Intervals.
  • Bright colored, tasty peppers are the norm.
  • Apparent Brightness Chart.
  • Operational Comparisons.
  • Measuring Energy Efficiency.
  • Mercury Utilization
  • Tomatillos need plenty of intense light to ripen to sweetness.
  • What plants reach for!
23.00 LBS
Calculated at checkout

Product Description

How to get higher sustainable yields and improved quality, while saving energy, with Inda-Gro Induction Grow Lights:


Buy the Inda-Gro Pro420PAR Grow Light!

Use Inda-Gro for Efficient Reliability, Long Life, and lower temps.

Ideal for Horticulture: Great Results with Light Movers.

Aeroponics, Aquaponics, Aquariums, Aquaculture, Hydroponics Systems? Give it a try!

Plant Growth and development are significantly influenced by both the quantity and quality of the light received, converted, through a process known as PHOTOSYNTHESIS, into energy which the plant requires to successfully mature.

More Information is embedded in the slide show, click the top lamp image. Video too!

Inda-Gro EFDL Grow Lights provide your plants the best horticultural lighting for explosive growth and high yields from a single lamp source, for the entire Growth through Flower & Fruit cycles, while saving energy consumed compared to traditional lamp technologies. Beginning with the proven efficiencies of low wattage and high output EFDL technology, Inda-Gro lamps combine a blend of rare earth phosphors to supply the proper spectrum for overall plant lighting needs.

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This unit uses a scant 420 Watts and may produce as much growth as 750 Watts of MH and flowers and fruit similar to 600 Watts of HPS, many report better results.

Consider adding either a Pfr Pontoon or a Flower Initiator and a Red Booster (Discounts in Options up top) to take Inda-Gro the next performance level.

420 Watts - Covers a optimal 3'X4' to a maximum 4’x4’ Area. Consider this: At 2ft the intensity on the canopy is 5 times greater than at 8ft.

In the Greenhouse or Indoors proper grow light with a sunlight-like spectrum, tweaked to make it more efficient, can also mitigate disease pressures that are often seen with plants grown under lights with limited spectrums and higher temperatures.

  • Inda-Gro Lights can consume up to 70% less power than comparable HID lamps.
  • 3.5 Amps at 120VAC and 1.75 Amps at 240VAC.
  • Much less with in the Greenhouse with the Smart Light features.
  • Dependable Universal Driver operates on 120/277v 50/60Hz supply circuits.
  • Broad spectrum phosphor blend provide plants with vegetative thru flowering spectrums from a single lamp source.
  • Instant On/Off switching and variable dimming from full output to 50%.
  • Modular integration with existing greenhouse management and daylight sensing control systems.
  • 98% high reflectance reflectors mean more energy to the canopy with better penetration.
  • 92,833 VEL. Maintains 90% Lumen Output at 70,000 Hours.
  • 100,000 hour rated with 10% lumen depreciation @ 70,000 hours.
  • Consistent intensities and stable spectrum for repeatable crop production values.
  • 10 year prorated lamps and drivers warranty within the US.
  • The driver housing (power supply, or ballast)  will run in the 46C (114.8F) range while the surface of the lamp will run in the 93C (199.4F) range. Compared to an HID lamp that runs @ 482C (899F), our lamps run substantially cooler than comparable HID grow lamp. The Remote Power Supply option is recommended only with severe space limitations.


  • Dependable Universal Driver rated at 120-277v 50/60hz.
  • The 6 foot cord with a US 3 prong 120VAC plug is standard (wired to run on 120, 208, 240 and 277 VAC).
  • Swap out your outlet, the plug or use an adapter to match other 120-277 VAC needs.
  • RPS: The Remote Power Supply Option is available only here at Grow Light Source.


  • Broad Spectrum
  • Select Rare Earth Phosphors with an added 5% @ 630nm
  • 95% Par Usable UV and IR Spectrum
  • 3% UV-B light is emitted for the benefit of some flowers.

Product Dimensions:

  • H- 6.8" / 17cm 
  • W- 14.5" / 37cm
  • L- 41" / 104cm
  • Weight: 15 Lb.

Shipping Dimensions:

  • H- 13" / 33cm
  • W- 20" / 51 cm
  • L- 46" / 117cm
  • Shipping Weight: 23 Lb.

Contact: Consultants, Installers, Retailer!

Product Videos

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Product Reviews

  1. Best Light for growing 5 Star Review

    Posted by on 18th Jun 2014

    bought mine 2 1/2 years ago, will buy more to replace hps lights, I first wanted to convert all grow areas to 5x5 vinyl rails. Have a HPS besides the Indago, I can definitely see the difference, but have a well known strain in now and it stretches the same whether it's HPS or the indigo.(could be the feminized seeds, going back to regular and using a clone machine) (see Flower Initiator review).

  2. Superior to LED or HPS for Flowering 5 Star Review

    Posted by on 12th Feb 2014

    I bought the 420 watt Inda-Gro almost a year ago, and it's been working great. There's no need for cooling, and it gives strong, consistent illumination with just the right spectrum. I'm considering getting another one--I just wish they didn't cost so much. I'd have bought 2 if they were 2/3 the price.
    SELLER NOTE: I do give discounts to return customers, just contact me!

  3. Simple and Effective 4 Star Review

    Posted by on 20th Aug 2013

    My Inda-Grow Light was easy to set up, and it works great. It puts out far less heat than my HPS light did, and the quality and quantity of the light are great. I can put the light a few inches above the canopy without the risk of burning foliage, and that helps the light penetrate further down the plants. I'm thinking about adding a second one to the grow room--if only the price was lower--these things are expensive!

    Seller's Note: "I provide discounts to return customers on many products."

  4. Amazing 5 Star Review

    Posted by on 12th Mar 2013

    I replaced 6 - 1000w HID with 4 Pro420PAR Induction Grow lights. I can now keep my environment at 78 degrees, exhaust my air less and add CO2. Using the Pro420PAR, WX-C Series LED and the flower initiator I had the best harvest I ever had. I'm so pleased Bill took the time to explain all elements of his lights and how they work together to make the harvest the very best.

    Thanks again Bill for great customer service, product guarantee and prompt shipping.

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