I should know this...

[Tyrinius]

How far above the water line should you place 2 VHO's and 2-250 watt MH's? I have a small problem with heat, but nothing serious. There are many corals, a couple clams, and fish.

[wannabefishguru]

i heard six inches with MH

[smcdonn]

I keep my 250's about 7-8 inches off the water. Cheers

[Alphabet]

~8 inches. I have 4 VHO's.