JoeBlow5823
Well-Known Member
Looking at running two 315 cmh lights to flower a 40''x40'' tent. That will come out to 57w/sqft. What do you guys think? I want to get a really good CMH vs HPS comparison. The other tent is a 5x5 1000w double ended HPS running at 1100w. Obviously thats more watts per square foot for the CMH but they are significantly less efficient. If hps is 30% more efficient then that comes out to basically the exact same w/sqft. I figure both tents are pretty close to the upper limit of what the plants will be able to handle.