I am gonna use a 5x5x7 room with ether 2 400w or a 1000w
First I'd like to say I don't know much about hps since I grow with CFL,
but as far as my understanding goes on growing MJ (well actually plants in general) that it's actually more of an issue of
lumens (amount of visible light emitted) and
kelvins (color temperature) rather than how many watts u have..
This is why CFL is considered to be.. Well how can I put it without raising hell..
Is
better the word? lol..
It uses less watts, thus producing less heat and yet it gives out enough lumens..
It's cheaper, cooler, environmentally friendly and IMO better for beginners..
Oh yeah forgot to get to the point.. lmao
I think 2 400W would be better since u'd be getting better light coverage..