My space 3x3x6 custom box.This grow I use promix with some blood & bone meal and a cup of lime.My light sorce is only a 400 hps but have since ungraded to a 600 hps.I have several chambers but this is the last grow until I can build a bigger enclosure.Here are my girls at 29 days flowering.I only water using molasses until the end of this grow.Plants seem to be healthy so there is not a need for fertilizers.She also is packing on the frost.lol!