Hey Pandabear ,
The room is 10ft x 12ft. x 6 ft. tall with 2-1000w. hps. hortilux in cooltubes cooled by a 630 cfm blower . I only do 4 buckets at a time and spin each bucket 90 degrees everyday so everybody gets a fair chance . Reason for 4 bukts is shitty local plant count laws .
I do best with ind. / sat. 50/50 mutt strains . I only top once because I'm lazy and don't like having to tie so many colas to the ceiling and it hinders my spinning the buckets easily anyways. Works out to 500 watts per bucket but I can pull 3.5 - 4 lbs. per grow w/ very little effort . Do it a cpl. times a yr. And I have more than enough to keep me happy .
I use a crazy G/H 3 part recipe , LiquidKarma , cal/mag + , Koolbloom , Sucanat /Sugar -or- Sweet , and Hydrogard . It's recirculating D.W.C x Drip combos .
Peace
The Ghoul