Can anyone tell me what is or could be the cause of this? Everything is fine other than this one piece. It’s turning white In 2 seperate places. I have other of the same coral that’s doing ok also!
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What causes it to encrust on the stone .. flow causes this , depending on flow corals will grow up and out or spread and encrust ! .. but this is good .. if you break it of too frag it the piece that is left on the rock will continue too grow .. thus your first frag ! Plus what you can save from the piece you broke off .Problem is the bottom of it has encrusted onto the rock it’s on! What causes this? And can I prevent it in the future?
That could be many things .. to high nitrates .. too low nitrates .. alk swing .. and also as others have mentioned .. could have been eaten or stung ..Sorry I meant what causes the stn/rtn?