GoGrow V3 Master Grower LED Grow Light Review

The GoGrow V3 Master Grower LED Grow Light is a very powerful yet energy efficient grow light that can support your marijuana plants through all their growth stages from seeds to buds. This indoor light source is more cost effective and environmentally friendly than the more traditional high-pressure sodium or metal halide grow lights that are on the market. Read on to find out why!


The GoGrow V3 Master Grower is 12 inches long by 11 inches wide by 3.5 inches deep, and has a variety of colored LEDs that produce a full 12 band spectrum from ultraviolet light (410nm wavelength) all the way up to an infrared light (730nm wavelength). It has a 90-degree dual optical lens, and a high PAR value, which provides both great canopy penetration and great coverage – four square feet for flowering plants and five square feet for vegetative growth. The GoGrow V3 Master Grower also has a modular design, which makes it easy to replace a single cluster of its 3W Epiled LEDs.

The true output power of this grow light is 320W, and it requires an AC input of 100V to 240V (50/60Hz). The Master Grower has a range of working environment temperatures from -4F to +104F (-20°C to +40°C), and a continuous working time of up to 18 hours per day. The GoGrow V3 Master Grower comes with one GoGrow V3, one power cord, two carabiners and two ratchet rope hangers, so when you receive your grow light all you need to do is position it and plug it in. GoGrow also provides a 3-year no-hassle warranty and a 90-day money back guarantee.

Photosynthetically Active Radiation (PAR)

A grow light’s PAR value is very important, as it measures the amount and types of radiation that plants use in order to photosynthesize. PAR measures the range of light from 400nm to 700nm, so from blue light all the way through to infrared. In fact, the GoGrow V3 Master Grower has five infrared LEDs, which will appear dimmer to the human eye as we can’t see infrared light. These infrared bulbs will come in especially handy during the flowering stage of your plants as they aid chlorophyll A and B production, which is what plants use to make their food.

A high PAR value makes for better growing. Pure, unobstructed sunlight naturally has a very high PAR value, which we try to mimic with indoor grow lights. Unfortunately, creating high PAR value lights requires a lot of power. Other grow lights on the market usually require around 1000W of power to achieve a high PAR value output. However, this Master Grower LED grow light provides the highest power at the lowest wattage, needing only 320W to give the same output. That equates to much cheaper electricity bills, making this grow light a good investment in the long run.

Let’s look at some of the PAR figures for this high-power low-wattage GoGrow LED light:

  • Height 8” above canopy; Footprint 2 x 2’ PAR 2890µmol
  • Height 16” above canopy; Footprint 3 x 3’ PAR 1750µmol
  • Height 24” above canopy; Footprint 4 x 4’ PAR 1113µmol (suggested hanging height for bloom phase)
  • Height 32” above canopy; Footprint 5 x 5’ PAR 833µmol (suggested hanging height for veg phase)
  • Height 40” above canopy; Footprint 6 x 6’ PAR 613µmol (suggested hanging height for seedlings)

This means that with this grow light you can apply 1113µmol PAR to an area of four square feet, provided that the light is hung two feet above the canopy of your plants. This is enough to grow twelve adult-sized cannabis plants, from seeds all the way to flowering, adjusting the high as required for the different stages of growth.

Other Benefits

Because the GoGrow V3 Master Grower uses LED lights, it doesn’t need a ballast to keep it from flickering, or a bulky reflector hood which just takes up space. LEDs create less heat, meaning this grow light runs cooler than an HID lamp, keeping temperatures low and preventing your plants from drying out, so they will need less watering and ventilation. LEDs also have a longer lifespan than other bulbs, so you won’t need to replace them very often. They are also more energy efficient, making them cheaper to run by reducing your electricity bills. This, in turn, means that they are more environmentally friendly, as you can still get the same power output for only a fraction of the energy input.

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The GoGrow V3 Master Grower LED grow light will provide your plants with all the light they need to grow healthy and strong, and for cannabis plants to grow large buds. The full 12 band spectrum and PAR values are very impressive, especially for its relatively low power usage of 320W. The Master Grower is capable of growing your plants from seeds and seedlings through to vegetation and finally to flowering without any problems and without the need to flick a switch or use a different light to get the most out of your plants’ flowering stage. It will help you grow big buds with lots of taste and flavor for the perfect smoke!

The only real downside of the GoGrow V3 Master Grower is the price point. It is undoubtedly expensive grow light, but it does pack a punch. So much so that it is recommended to wear safety glasses when under the grow light in order to protect your eyes from the potentially damaging radiation.

Overall, the GoGrow V3 Master Grower LED Grow Light is an amazing piece of equipment. Whilst the price is a little steep, it is totally worth it in the long run with what you will save on energy costs, and at the end, you will end up with some healthy, tasty bud to smoke!