i have ur problem sometimes as i grow from seed and though there in the same packet the diferences r massive sometimes, right now i av 2 skunik#1 on the go almost finished, the tall one is 4ft plus the other 2 ft i built i separate space now for flower as tents av there limitations for hieght n width etc, dont get me wrong i av done well from me tent but now i just veg in it ! i was considering unrapping the tent keep the frame for lights fan etc but then i cud of lifted it up off the floor by 2 ft to give me the hieght i would of needed, just av no floor in ya tent and lift it up though u will av a 2ft gap allround the bottom so it wud need to be in a darkened room to work, but other than that man hang ya light off ya cieling enclose the area with some white reflective plastic untill there finished then on ya net grow go 12/12 earlier like massah says, just imagine ur plant will tripple in size onced flipped then math up ya space that u av left this way u no what size is the cut off,, in my case in a tent same as urs its 14/16 inches then flip, coz tripple that hieght i u still av enough room as not to burn them, the smaller ones will av to be lifted up to the hieght of the bigest one for a evenish canopy ! good look in whatever ya do but ya poor gal is hurting, lol, peace out man !