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Tue, 11th Nov 2008, 02:45 PM
#2
It's not good or bad. It's just a sign that the live rock is under different conditions now and the white that you see is not actually white growing coraline but dieing coraline algae.
You can test this by pulling a piece off and letting it dry, it will turn white.
When I move rocks in my reef and a piece is in the dark or flipped or unhappy it will die off and turn white.
New coraline will most likely come back once it adjusts provided there is light and flow.
It could also just be bleached and still alive. But in my experience white = dead.
Last edited by Mr Cob; Tue, 11th Nov 2008 at 02:48 PM.
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