i just did the math on the lumen output on my system and i got roughly 26,000 lumens. and that consists of 1 70w hps bulb (i had a 100 watt but it cooked one of the buds on my plant a lil), A 65w big cfl, A 42W cfl floodlight, A 22w cfl, a 20w 18 inch florescent light, and two Dual 34W linear...