Acans and blasto problems

[Coral Hoarder]

So my acans have been growing like crazy but this morning I saw that some of the tissue came off of one of my acan frags and it's exposing the skeleton I had a bunch of blastos do the same thing the only thing with my levels is my nitrate is at 0 and calcium is high at 480 ish

Anyone had this problem?

[daplatapus]

I had some issues with my blasto's until I totally took them out of direct contact from my MH's. Even at the bottom of my 24" deep tank, I had to put them under a plating monti.