Originally Posted by teen
im looking at mh lighting, its a 400 watt mh retro kit, this is what it looks like.
i was thinking two of these on a 55 gallon, 24" deep. would that be to much, do u think i should go with one of them?
Im guessing 2 would be too much. Your looking at about 14 watts per gallon. Might lead to algae outbreaks and way to much heat. Better off with 1. Whats the Kelvin rating? 10k, 14k, 20k?