Oh I see what your saying, sorry. Is that rule 50 watts per sq. ft.? Anyway I would guess that you could get away with 3' x 5' for a 1000 watter. That should give you pretty good coverage. Perhaps 3' x 6', but I don't know how your would get the light to hit everywhere with something that's twice as long as it is deep, unless you use two lights.
Opie Yutts Reviewed by Opie Yutts on . Maximizing space - stemseed's grow idea So I'm planning out a new grow room. Money isn't too much of a problem in this one because I want it done right, but I don't want to run my electric bill up too much ,which is why I'll have the veg and flower running on 600w instead of two 1000w's. I may be able to get extra CFL's in the cabinets if 600w isn't enough. Here is one idea for the room that I got last night. I had a couple others but using the cabinets will allow me to both control the plants more and devide the grow area. Any Rating: 5