I just purchased a new 24" t5 quad fixture for my 30 gallon reef. I have them about 4-5" from the water surface. Is this too low?
I also have my sps frags about 1-2" below the water surface.
Should I move my lights up? They aren't as bright as my blackboard leds, I was suprised. This is why I'm wondering if I should keep them close to the tank.
TIA
