I am also considering using 4 300watt hps to a maximum of 1200watts. then build a second box. that way I can have two running in the same house and have them alternate when they are on for flowering. so I have a consistent 1200watt load, so if someone were watching they wouldn't see it peak for 12 hours for a 1200watt load, then drop at the same time daily. grid power sucks.
I almost think the 3 400 watters would be a better choice in such a small box. I am already worried about heat. I have seen a chart somewhere before about optimal distance vs lumens at x feet or something. maybe someone can chime in if the 600's would be too close sitting in the center (plants are only a foot to either side of the light) I am almost certain the 1000s will be, and I also think that 3 lights rather than two with less watts would help more. just need to figure out a co2 system
I almost think the 3 400 watters would be a better choice in such a small box. I am already worried about heat. I have seen a chart somewhere before about optimal distance vs lumens at x feet or something. maybe someone can chime in if the 600's would be too close sitting in the center (plants are only a foot to either side of the light) I am almost certain the 1000s will be, and I also think that 3 lights rather than two with less watts would help more. just need to figure out a co2 system