Hey Chad thanks for the response! But do you really think I have too much light? From what I understand it's all about PAR. So how would I go about figuring the PAR of my corallife? I'll take your advice on the excel. Have seen a lot of people use it on this forum. As far as the water change goes ill start doing a 50% at least once a month to help prevent build up. Thank you. Any one else?!