Ushio AHS-DE1000w Opti Red (50/Cs) Ushio Enhanced Performance HPS LampsUshio AHS-DE1000w Opti Red (50/Cs) (902912) 400W, 600W, 1000W SUPER high output HPS with maximized output in both red and blue spectral range. SUPER HPS bulb with maximum output in both red and blue spectrum. Runs on HPS Ballast. Optimized for maximum flower yield, and added blue spectrum for vegetative growth efficiency.... This item is sold individually....more.