Hi everybody, a month ago i set up a C/R model CR-6 dual from www.myreefcreations.com on my 125g tank, after that i have a lot of corallin growth on my tank, but now the corallin is out of control and my SPS looks more healthy. When i set up this unit i scrapp off all the corallin algea on the back glass of my tank and take a look how it growth on one month. I keep the CA of my reef always in 450 ppm without problems. Thanks Andy for work for us. Ralphyhp