Whoyah, I have 1 250 ABDE 20k on a HQI ballast(about 300 watts), 2 250 watt XM 10k's on a PFO ballast and 4 65 watt pc's. Growth has really sprouted... I had a T.squamosa clam that I had to find a new home for due to the growth between him and the reef... I traded him out for those 2 electric T. crocea and 2 cleaner shrimp. It looks sooooo much better in person... the cam I use just doesn't do it justice. All of those brilliant colors are really sweet!!! Thanks guys.