So these little green monsters have had quite an interesting life so far. They all started out in one pot 18"Lx6"Wx8"D under a 4' single bulb fluoro, under a few cardboard boxes behind a speaker box in my closet, lol. Those poor things, well then i bought a 2' Fluoro two-bulb T12 Fixture. I put two OTT-LITE Natural Light Supliment Bulbs in and had it mounted on the wall alongside the pot just above the top of the planter. Well up to that point, 1-4 weeks, i had noticed they were growing very slow. Obviously nowhere near enough light and it was coming from the side, not the top. Well i transplanted them into 4 different pots and noticed a lil increase in growth rate. I started feeding with Miracle Grow Liquid House Plant Food and SuperThrive. From that i noticed a lil more of an increase in growth after that as well but not near what i felt it should be. So then i built a grow cabinet 2'w x2'd x 4'h. After putting them in the new cabinet, i hung the fluoro from the top so now it's directly over them, about 4 inches from the top of the tallest plant. They seem to like their new home as the tallest and fastest growing one has already grown an inch in two days. That's the best growth rate i've seen so far. I have purchased both a 150w HPS bulb and a 150w MH bulb. I can't use either of them yet tho because i haven't bought a lighting system yet, funds are short. I should have a switchable remote ballast system within the next two weeks. Quick question for the pros - if i have about 3-1/2' of height in my cabinet, about how tall should i let them get or how many leaves in the largest set should i wait for to switch them to 12/12? I was thinking about 12" or so tall or 7/9 leaf sets before switching, but not sure if that would be best for them.