The more vertical space the better.... Less than 3 feet can become a serious challenge.... 5 feet + is a comfortable amount of room.

If your gonna grow, you should get an HPS light.

Attics can get real real hot .. can you manage the heat?

good luck
Garden Knowm Reviewed by Garden Knowm on . more newb questions hey i have a couple questions, how tall should i make a grow "room" im growing in my attic so i have to build something else inside the attic so i would like to know how tall should i make it? also i have alot of reptiles so i was curious, i have a uv light laying around, could that be used, then have another flouresent lamp for heating? (i only plan on growin 1-5 plants) i was thinking a 200 W bulb for heating and the uv to act like sunlight. would that work? any help would be great. Rating: 5