800W - 1000W LED Grow Lights

Commercial-Grade Output for Dedicated Flower Rooms

The 800W to 1000W class is built for one job: saturating a full 5x5 canopy at peak-flower PPFD with the consistency a commercial room demands. Fixtures here run modern white-plus-red diode arrays at 2.7 to 3.1+ µmol/J, matching double-ended HPS output while dumping a fraction of the heat into your space.

Matching Wattage to Your Canopy

At this power level the goal is filling a large footprint evenly without photobleaching the center. Coverage scales with wattage and how much headroom you want for CO2-boosted intensity.

• 4x4 to 4x5 high-intensity (800-880W): The Grower's Choice ROI-E900 and ION LED XR-830W push past 1000 µmol/m²/s for dense, light-hungry genetics or CO2 rooms.
• 5x5 standard (900-1000W): Bar fixtures like the AC Infinity Ionframe EVO10, Mars Hydro FC 1000W EVO, and Spider Farmer G1000W cover a 5x5 edge to edge at flowering intensity.
• 5x5 dense or CO2 ceiling (1000W+): The Photontek XT 1000W CO2 and Black Dog PhytoMAX-4 16S give you the ceiling to drive 1500+ µmol/m²/s once CO2 supplementation lets plants use it.

What to Look for in an 800W to 1000W LED

Wattage is the headline, but at this scale the supporting specs decide whether a fixture earns its place in a sealed room.

• Efficiency (µmol/J): Look for 2.7 to 3.1+ µmol/J. At a kilowatt of draw, even a 0.2 µmol/J gain meaningfully cuts heat load and running cost across a full flower cycle.
• 120V vs 240V: Most fixtures above 700W are happiest on 240V. Running at 240V roughly halves the current draw, which reduces line loss and lets you fit more fixtures per circuit in a multi-light room.
• Spectrum channels: Dedicated UV and far-red channels drive resin and terpene response. The Secret Lighting SL-830 integrates UV and IR on a single driver for growers chasing finish quality.
• Dimming and daisy-chaining: 0-10V dimming and chained control let you balance veg and flower zones and synchronize a whole room from one controller, ramping DLI without light shock.
• Build and brand support: Proven names like AC Infinity, Mars Hydro, Photontek, Grower's Choice, Iluminar, Black Dog, Secret Lighting, and Medic Grow back these fixtures with commercial warranties.

If you are weighing specific models across brands, our LED grow light buying guide lines them up on efficiency and coverage, and to confirm how many fixtures a larger room needs, see how many watts per plant your canopy requires.

Growers covering a 4x4 or 4x5 can run cooler and cheaper on 600W to 800W fixtures, while anyone standardizing on single-fixture 1000W rooms can browse the dedicated 1000W lights. At this output, pair every fixture with a grow light controller for synchronized dimming and tie temperature, humidity, and CO2 together with an environmental controller.

Frequently Asked Questions