If you are using a standard overflow U tube what I did was use the caps from a couple of one gallon distilled water jugs. Use the distilled water for make up water in your tank. Save the plastic caps on the jugs as they are the perfect size to cap your U tube. Turn the u tube with both end...
Hi,
Be careful about putting any type of plastic between the lights and the tank. 2-250w lamps might melt or deform the plastic. I would keep the MH at least 12" off of the surface of the water. The amount of light you have should be fine for any type SPS corals. I'm running 2-110w VHO's and...