Originally Posted by sns26
If your calculations are right, then my own array (27 mostly XP-Gs over a 36"x18"x20"h tank) is going to be a fryalator, not a light source. But I knew from the start that I might be going overboard.
What are you going to use to drive the moonlights?
I have 24 XP-g over the same size tank, even at 30" from substrate it's high light.