Growshop
by Pure Factory
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The Pure LED Q320 grow light is a 320-watt full-spectrum LED panel from Pure Factory that covers 100–120 cm grow tents with even, powerful light from seed to harvest. Built around 1,280 Samsung LM281B+ PRO diodes and 90 Honglitronics deep-red LEDs, it delivers 2.7 µmol/J efficiency — meaning more photons per watt and lower electricity bills. If you're running a medium to large tent and your old light is holding you back, the Pure LED Q320 grow light is the upgrade that actually makes a difference. Ready to buy a light that matches your ambitions? This is the one.
The Pure LED Q320 grow light ships with everything you need to hang and run it immediately. Inside the box you'll find:
No external ballast to mount, no extra cables to run. The unit weighs 5.6 kg — light enough to hang from standard tent crossbars without reinforcement, heavy enough to feel solid when you pick it up. The aluminium housing has a slightly textured finish that dissipates heat passively, so there's no fan inside. You can literally stand next to it and hear nothing. That's not marketing — it's a genuine relief if you've ever tried to sleep in the same flat as a buzzing HPS ballast.
The Pure LED Q320 grow light uses 1,280 Samsung LM281B+ PRO white LEDs paired with 90 Honglitronics SMD3535 deep-red (660nm) diodes. Samsung's LM281B+ PRO line is the same chip platform used in grow lights costing twice as much — it's the current sweet spot for efficiency and lifespan in horticultural lighting. The 4000K white base covers the full PAR spectrum from blue through green to red, while the dedicated 660nm diodes add the deep-red wavelengths that are associated with flowering response in most common cultivars.
At 2.7 µmol/J, the Q320 converts electricity into usable plant light more efficiently than most lights in this price bracket. For context: a typical budget LED panel sits around 1.8–2.2 µmol/J, and top-tier bar-style lights push 2.8–3.0 µmol/J. The Q320 lands right in the upper range without the upper price tag.
The IP65 rating means it's sealed against dust and water jets — not just splashes. You can mist your canopy, run high humidity during veg, and not worry about moisture creeping into the driver. We've seen cheaper panels with IP44 ratings corrode at the terminals within a year in humid tents. IP65 is a genuine step up. According to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), indoor cultivation environments increasingly rely on sealed, humidity-resistant equipment — and the Q320's IP65 rating meets that standard comfortably.
The Pure LED Q320 grow light has the following technical specifications, as listed by Pure Factory.
| Spec | Value |
|---|---|
| Dimensions | 540 x 540 x 43 mm |
| Weight | 5.6 kg |
| Power consumption | 320W |
| Input voltage | 100–277V AC |
| Power factor | >0.90 |
| LED chips | Samsung LM281B+ PRO (1,280 units) + Honglitronics SMD3535 (90 units) |
| Efficiency | 2.7 µmol/J |
| Spectrum | Full — 4000K White + 660nm Red |
| Beam angle | 120° |
| Humidity protection | IP65 |
| Dimming control | Manual dial + compatible with all 0–10V signal controllers |
| Operating temperature | -25°C to 35°C |
| SKU | GS0006 |
Pure Factory makes three LED panels in this series, and the Pure LED Q320 grow light sits in the middle as the best match for most standard tent sizes. Here's how they stack up so you can pick the right one for your tent size.
| Model | Wattage | Coverage | Best for |
|---|---|---|---|
| Pure LED Q150 | 150W | 60–80 cm tent | Small spaces, single-plant setups |
| Pure LED Q320 | 320W | 100–120 cm tent | Medium to large tents, serious yields |
| Pure LED Q420 | 420W | 120–150 cm tent | Large rooms, maximum canopy coverage |
The Q320 is the middle child, and honestly it's the one we'd pick for most growers. The Q150 works fine for a small tent, but if you've got a 100x100 or 120x120, it won't deliver enough PPFD to the edges. The Q420 is brilliant for big rooms, but it's overkill — and overspend — if your tent is 120 cm or under. The Q320 at 320W fills that 100–120 cm footprint properly, corner to corner. We've also had customers compare it to the Spider Farmer SF300 and Mars Hydro TS 3000 — the Q320 holds its own on efficiency and beats both on humidity protection with its IP65 rating.
The Pure LED Q320 grow light solves the most common problem in medium-sized tents: uneven canopy coverage that leaves edge plants underperforming. Here's what actually happens when you run an underpowered light in a 100–120 cm tent: the centre of your canopy gets decent light, the edges get half as much, and your outer plants stretch, produce airy buds, and finish two weeks late. You end up with a mix of dense tops and wispy larf that's barely worth trimming. We've seen it hundreds of times.
The Q320's 120° beam angle and 540 x 540 mm footprint spread light evenly across a square metre without needing supplemental side lighting. At 320W actual draw, you're pulling roughly the same electricity as a small HPS setup but generating far less heat — which means less ventilation, less climate stress, and less money on extraction fans running at full speed. Over a 12-week flower cycle, the energy savings alone are noticeable on your bill.
The manual dimming dial is more useful than it sounds. During early veg, seedlings and fresh clones don't need — and can't handle — full intensity. Dial it down to 50–60% for the first two weeks, then ramp up as the canopy develops. If you're running an automated setup, the 0–10V controller compatibility means you can programme sunrise/sunset ramps and intensity schedules without touching the light. That's a feature you usually find on lights in a much higher price bracket.
One honest limitation: the Q320 is a flat panel, not a bar-style light. Bar-style fixtures can offer slightly better light penetration into dense canopies because of the spacing between bars. For most growers running a standard SOG or SCROG in a 100–120 cm tent, the panel design works perfectly well. But if you're growing tall, untrained plants with deep canopy layers, a bar light might edge it out on lower-bud development. For the price, though, the Q320 is hard to beat.
Setting up the Pure LED Q320 grow light takes roughly ten minutes with no tools beyond what's in the box. Follow these steps:
Complete your setup with a grow tent in the 100x100 or 120x120 cm range — the Dark Box and Secret Jardin lines both pair well with the Q320's footprint. You'll also want a carbon filter and extraction fan if you don't already have ventilation sorted. For seedling and clone stages, a propagation heat mat helps root development before the plants move under full light. Check out the Azarius grow equipment category for compatible tents, ventilation kits, and climate controllers.
We've been stocking Pure Factory gear for a while now, and the Pure LED Q320 grow light is the model that comes back with the fewest complaints. The passive cooling means there's genuinely nothing to break — no fan bearings to wear out, no moving parts at all. The Samsung diodes have a rated lifespan of 50,000+ hours, which works out to roughly 8–10 years of daily use on a standard 18/6 or 12/12 cycle. One thing to keep in mind: at 5.6 kg, it's light enough that a single carabiner and ratchet per corner is plenty. Don't over-engineer the hanging setup — it's not a 15 kg HPS reflector.
The near-silent operation is genuinely noticeable. If you're growing in a bedroom, spare room, or anywhere you spend time, the absence of fan hum is a proper quality-of-life upgrade. We've had customers switch from cheaper LED panels specifically because the built-in cooling fans drove them mad. The Q320 has no fans. Zero noise. Just light.
A quick story from the shop: one regular customer came in last autumn after running a no-name 300W LED for two cycles. His edge plants were consistently producing half the weight of his centre plants. He swapped to the Pure LED Q320 grow light, changed nothing else, and his next harvest came in noticeably more uniform across the canopy. That's the kind of difference even light distribution makes. It's not magic — it's just physics and decent diodes doing their job.
The Q320 comfortably covers a 100x100 cm to 120x120 cm grow tent. Its 120° beam angle and 540 x 540 mm housing spread light evenly across that footprint without dark edges.
Yes. There's a manual dimming dial built into the driver. Dial it down to 50% for seedlings and young clones, then increase gradually as your plants develop. It also accepts 0–10V signal controllers for automated dimming.
Far less than HPS. The aluminium housing acts as a passive heatsink, so there's no internal fan and no hot spots. You'll still need extraction in a sealed tent, but the Q320 won't cook your canopy the way a 400W HPS does.
No. It has no fans or moving parts — cooling is entirely passive through the aluminium housing. It's effectively silent, which makes it a strong choice if your grow space is near living areas.
The Q420 draws 420W and covers 120–150 cm tents. The Q320 draws 320W and covers 100–120 cm. If your tent is 120 cm or smaller, the Q320 gives you full coverage without paying for wattage you won't use.
Yes. The full spectrum (4000K white plus 660nm deep red) is designed for use across both vegetative growth and flower development stages. No need to swap bulbs or panels between stages — one light does the lot.
It runs 1,280 Samsung LM281B+ PRO white LEDs and 90 Honglitronics SMD3535 deep-red (660nm) diodes. The Samsung chips are the same platform found in grow lights at much higher price points.
It's rated IP65, which means sealed against dust ingress and water jets from any direction. You can mist plants, run high humidity, and not worry about moisture damaging the electronics.
You can order the Pure LED Q320 grow light directly from Azarius. It ships ready to hang with all necessary hardware included in the box.
Last updated: April 2026
