Greyish/Whitish on Live Rock

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Eelzor

This shrimp is so good it needs to be seen in wide
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Sep 16, 2003
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Today I have noticed that there is "greyish" on my live rock in some parts. As if there is no life on those parts. Most of the live rock is still brownish as normal, but some parts are greyish. Along with that, some small parts of my crushed coral substrate are grey as well. Just a note that there is not alot of this, but it is quite noticable around the rock and sand.

Plz Help on this one, tnx.

P.S - It is definately not diatoms.

Edit: From some research I am thinking that this is "dead porites" - any thoughts on this?
 

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