Well Hello To All !!!! Been reading alot out here and now my first!!!!
Just bought a 2 X 250 halide retro for my 75 gal reef that currently has a 4x65 pc. How far above the water should they be (ie. 6in, 12in)? Or, does it not matter... Any input would be great.. I also have a 1/4 hp chiller...