Thanks for input SDKSlayer, i'm miss doodles, had to do a new name i forgot my password
I'll be setting up our growroom in 2 or 3 weeks, goin moochin for bits n bobs at the weekend, anyone have an idea of how may 400w hps light we would roughly need to have for say 2/3rds of that 11'x12' room ? Heard different things n just slightly confused