600's are more efficient than a 1000.. you need 800? 1000 watts to much light? Never enough light! As long as you have proper ventilation,passive as well as exhaust.

Ga.
GaGrown Reviewed by GaGrown on . Why is there not a 800 Watt HPS system? I need the appropiate system for a 4x4 room. All the online calculators say for my 4X4 room, I need 800 watts. Thats all fine and dandy, but I cannot find a 800 watt system.. I found 400, 600 and 1000.. Is the 600 enough? Or is the 1000 too much? Rating: 5