A few weeks ago I was given a kweek (verticle growing system) as the guy couldnt get on with it.... I posted to ask a few q's about hydro, thanks guys I think I got it now, and a few people asked if i could post and say how I am gettin on, well after a few temp issues I have had to downgrade from a 600 only got a 250w in there (no 400 unfortunately) with fans pullin all air out and relying on a passive neg pressure inlet I am quite impressed with the growth rate they are showing I think his prob was growin them too big b4 heading as they are small but compact like cabbidges stickin out and the buds are tight nuggety affairs. any ways thanks all and I might be able to get some pics up soon once I get me camera back.