I have pretty much the same set up as you (6 1/2' cube tent w/ a 1000 watt hps & 2'x3' a/c reflector).One of my 2 plants well over 2' + the height of the bucket when I started flowering 23 days ago,almost 2 weeks later than the grower I bought them from said he would start them.It quikly shot up the foot or so to the hot glass of the reflector then I just turned the pot where it could grow past it.I did very little trimming but the grower had "bent" ? one of them where it grew a little sideways...instead of growing up its growing out more,with a little trimming I think it would have been about perfect.The two of em take up almost half the floor space of the tent,as far as doubling & tripling in size i'd say mine are close to triple what they where 3 weeks ago.And yes,they will start stinkin up the place in a few weeks.Ive got a pile of plants in veg (allowed 16 plants legally but only 4 in flower) and will start trying several different trimming styles within the next week.Can anyone recommend the names of a few of the most popular styles of trimming indoor plants to start with?...working on getting a digital camera soon to upload some pics.