anyways , thanx for ur replies ppl......i have already cut a few fan leaves as they were blocking the light reaching around two-three bud sites.....i lfollowed kuris' advice as it seems more logical to me as I did LST as well and have branches and leaves everywhere....i must have cut around 5 fan leaves from 3 four foot plants.....no harm done....one more thing is that practically each plant of the 4 big ones grows with 200 watts of HPS (if you consider that i have 4 giants under 2x400 HPS) so they get all the light they need i guess.....one more thing i notice is that the watering become more often lately....day 20 today..... thanx again evreryone , take care