reefobsessed
Aquarium Advice Freak
MH are to spendy not to get this right the first time so thanks for your help in advance. I have a 45 gallon that is 19 to 20 inches deep. I have two clams on bottom that the light needs to reach and want to add acropora for upper level. Thinking of getting 2 250 watt 10K bulbs in a ballast that is 19 inches long and since my tank is a pentagon it would run the length of the tank.