Grow Light Science PROGROW 850 is an 8‑bar, full‑cycle LED fixture built for high‑intensity cultivation. It draws 850 W and covers up to 5 × 5 ft in flower (about 6 × 6 ft for veg). Output is rated at 2261 μmol/s with an efficacy of 2.66 μmol/J using the company’s GLS HI‑RED spectrum built from Samsung and Ledestar diodes (3000K + 5000K white with 660 nm red). The fixture integrates 0–10 V dimming with dual RJ12 ports for daisy‑chain control, and carries an IP66 rating plus ETL listings to UL 1598/UL 8800. Dimensions are 47.2 × 42.8 × 3.2 in and weight is 30.2 lb. Q90 lifetime is specified at more than 36,000 hours, supporting sustained performance in CO2‑supplemented 5 × 5 deployments.
