Pure Fission 720W Compact LED Grow Light – The Pure Factory · Full Spectrum & Dimmable

The Pure Fission 720W Compact Controllable LED Panel is a high-performance lighting solution designed to replace inefficient HPS systems, offering a full spectrum output that maximizes resin production and bud density while significantly reducing heat. This 6-bar fixture combines power, efficiency, and versatility, making it the centerpiece of a modern cultivation setup.

Are you still struggling to keep your grow tent cool while your electricity bill keeps rising?

We know the feeling. You spend months nurturing your plants, only to have heat stress burn off those precious terpenes, or you find yourself constantly adjusting ducting to manage the temperature spikes caused by old-school lighting. It’s exhausting, expensive, and frankly, your plants deserve better than a stressful environment that limits their genetic potential.

The solution is here, and it’s brilliant. The Pure Fission 720W eliminates those headaches instantly. By switching to this high-efficiency LED, you drastically cut down on radiant heat, allowing you to control the climate with ease. You get more light (photons) for every watt of electricity you pay for, resulting in heavier, frostier harvests and a much smoother indoor grow experience.

Before starting your grow with the Pure Fission 720W

Before you hang this beast, you need to prepare your space. This panel is powerful—seriously powerful. It is designed to cover a footprint of up to 150x150 cm effectively. Unlike heavy magnetic ballasts of the past, this unit is relatively lightweight (6.8 kg) and foldable, making installation a breeze even if you are working alone. However, because it pushes 720W, ensure your ventilation system is dialed in, not to remove heat from the light, but to manage the transpiration of your rapidly growing plants.

• Check your height: Ensure you have enough vertical space. You'll need to keep the light at least 15-30 cm away from the canopy during bloom, but more distance is better during veg.
• Power check: Although it has an integrated electronic ballast/driver, make sure your timer and power strip can handle the load safely.
• Hanging gear: Use sturdy ratchets (usually included or bought separately) because you will be adjusting the height frequently as your plants stretch towards this intense light source.

During the cultivation cycle

Once you flip the switch, the magic happens. The Pure Fission 720W isn't just "on" or "off"; it adapts to your cycle. During the vegetative stage, you don't need to blast seedlings with 720 watts. Use the manual dimmer to dial it down to 25% or 50%. This saves you money and prevents light stress on young plants. As they harden off and establish roots, you can crank it up.

When flowering hits, unleash the full 100%. The mix of White (LEDstar SMD 2835) and Red (LEDstar SMD 3030) diodes creates a spectrum that mimics natural sunlight but with an extra punch in the red wavelengths to stimulate massive flower formation. You will notice that your plants drink more water and eat more nutrients because their metabolism is accelerated by the high PPF (1940 µmol/s). It's a sign that they are thriving under these premium grow lights.

After: Results and Maintenance

The cycle is done, and now comes the best part: the harvest. Growers switching from HPS to the Pure Fission 720W often report a significant increase in grams per watt (g/W) and, more importantly, a better terpene profile because the trichomes haven't been degraded by excess infrared heat. Your buds will be denser and stickier.

Maintenance is almost non-existent. No bulbs to change every few months. Just take a clean, soft cloth and wipe down the bars to remove any dust or organic residue that might block the light. That’s it. With a lifespan of 50,000 hours, this panel will be with you for years of successful harvests.

Advantages and benefits of the Pure Fission 720W

• Total Control: The manual dimmer (25%, 50%, 75%, 100%) puts you in the driver's seat, allowing you to match light intensity to plant health.
• Energy Efficiency: At 2.7 µmol/J, you are getting professional-grade efficiency, meaning lower bills for higher output.
• Full Spectrum: The balanced spectrum ensures tight internodal spacing in veg and explosive swelling in bloom.
• Silent Operation: No buzzing fans or humming ballasts; your grow room stays stealthy and quiet.
• External Control Ready: It features RJ12 ports, allowing you to daisy-chain multiple units and control them from a master controller (sold separately).
• Cool Running: Passive heat dissipation extends the life of the diodes and keeps your environment easier to manage.

Frequently Asked Questions

What is the optimal hanging distance for the Pure Fission 720W?

We recommend starting at about 40-50 cm during vegetative growth (dimmed) and lowering it to 15-30 cm during peak flowering, always monitoring your plants for signs of light stress.

Can I connect multiple Pure Fission panels together?

Yes, you can! The panel includes RJ12 connections, allowing you to link multiple units in series. This is perfect for larger grow rooms where you want to control all lights simultaneously.

Does this light come with a warranty?

Yes, The Pure Factory offers a 3-year warranty on this fixture, giving you peace of mind regarding its durability and build quality.

Is it suitable for a 1.2m x 1.2m tent?

It fits physically, but it is very powerful for that space. If you use it in a 1.2m tent, you likely won't need to run it at 100% power, which is actually great for efficiency and longevity.

Personal Experience of Pevgrow’s CEO (Alan)

"I've tested dozens of LED bars in this price range, and the Pure Fission 720W really surprised me with its build quality. The first thing I noticed was how easy it is to unfold and hang—it doesn't feel flimsy like some budget options. In my tests, I ran it in a 1.5m tent, and the light spread was impeccable; no hot spots in the center and dark corners.

My top tip? Don't underestimate the power of this thing. I see many people cranking it to 100% on day one of flower and bleaching their tips. Start at 75% when you flip to 12/12 and only go to 100% from week 3 or 4 onwards. The density of the lower buds was significantly better compared to a 600W HPS. For the price, it's a no-brainer upgrade."