lpcuong

Is this one:

You test PO4 and see the result, I guest PO4 is too high. Once I faced the same problem as I did not care about PO4 level, then I applied PO4 removal equipment. Bleaching seem stop since then, but the bleached corals have not recover its colour. I intend to try some more nutritrition such as Zeovit Coral Vitlizer hoping the coral becoming colourful again