shibby1
New member
I have had a few corals bleach out on me recently. A blue stag completely went white. Along with a green Millie and a rainbow monti I had. Then it started happening to my tricolor and my bonsai. My calcium is 475 alkalinity is 3.76 meq. I was thinking maybe magnesium was low so I dosed a couple ml over 2 days. And it's seems like it's getting worse. Then I thought I just had to much light over them because I don't have any fish in my 74g. So I've fed them today and yesterday. Corals all eat healthy. Any ideas? I know I need to test phosphates nitrates and magnesium to get a better understanding but anything like this ever happen to one of you?