Growcraft Ultra – 600W

Growcraft ULTRA – 600W is ChilLED Tech’s six-bar LED fixture built for dense 4×4 ft flowering coverage. The ULTRA series emphasizes diode count and low current per LED: this 600 W model uses 7,776 Samsung 5000 K whites plus 432 deep‑red 660 nm diodes (8,208 total). An independent Light Laboratory LM‑79 test measured total PPF 1,986 µmol/s and full‑system efficacy 3.19 µmol/J at 622 W with an HLG‑600H‑48B driver, aligning with the 600 W input spec. The fanless, passively cooled chassis measures about 108×108×3.5 cm and weighs ~15.35 kg. Recommended hanging height is 12–24 inches with 6 inches minimum headspace; dimming spans 5–100%, and input voltage is 90–305 VAC. Designed and assembled in the USA, the light targets a yield‑max flowering spectrum.