Growing out SPS to cultivate frags can be both a rewarding as well as a frustrating experience. Most of my farmed Acros have thrived while a few have sputtered. Quit frankly, it is a mystery to me as to why a few have been dormant. But that is part of the game, I guess. I recently took inventory of my 75 gallon frag tank, which is lit by two 400W 20K Radium bulbs. The corals in this tank are a mixture of mature colonies, some not so mature and others that are tiny frags. MORE