Plant Height Question

If i have only 5ft of clearance from the top of my bubbleponics system to the hps lamp in my flowering room, about how high should i let my plants get before i stick them into the flowering room. The strain is big bud and ill be flowering 4 plants in the room with a 600w hps. I just dont want them to go crazy with verticle growth and get burned, plenty of room for stretching out though.

Thanks

welcome to the forum. YOu can get that light about a foot above the plants as they mature so you have foour feet of usable space. Seems to me big bud is usually used cause its short, I've never grown it. I could be wrong about that. VV

cool, thanks for the info vv