Hi Steve,
I set these tanks up with stuff we had laying around. Geez, isn't there always stuff laying around!??!! Don't go spending money for me, though, okay
The tanks are 10" high and the NOs are directly on top of the glass. Temp rise is about 4 degrees F from morning to night. Got carried away with the sandbed, so it's almost 3" deep
The farthest away from the light any sps frags would be are 7", give or take a bit for the actual height the lights are off the glass - maybe an inch at the outside. Plus I put in a bit of LR for the frags to be attached to, so some of the frags could be as close to the lights as 4"-5".
DH went to the specialty light store the other day, where he can get tubes for 1/3 the price anywhere else, to order pc lights for our 72g. I asked him to order some 6500K tubes for the two 5g's.
Really, the tanks are ablaze with light even with the 2 x 30w NOs, though I think the 6500k's will show colour more vibrantly. Do you think so too?