My friend has a 4x4 closet running a 1000 HPS with adequate ventilation and low temps. So far everything is fine with the 1000 watt but I'm curious to know if he should throw in his spare 400 watt inside also. (Again temps and vents would be fine with the addition)
I mean would it be justified running another 400 watts for the extra yield or should he just run with the one 1000 watter?
