[mreJ]

first post and you're already going big. aim high because if you miss you'll land with the stars.

do you absolutely need 50 plants? that sounds like a cramped space but thats just me....maybe 30-40 would fit more comfortably.

i also think if you are trying to go for such a high number of plants, i believe you should use 2 lights both being 1000w.

put those two 1000w lights on some light movers if you can afford it and you'll be rewarded even more :P