i also have a 4x2x5 tent. i use 2 gal. dwc buckets and a a/c hood with 400w hps. I suggest that you flower before the plants reach 15 in.i got green house and i'm pretty happy so far nice short bushy plants just wondering when i should start to flower them i only got a 4x2x5 tent didn't want to out grow my space been vegging for four weeks now . What didn't you like about the grow?