Does this algae blow off the rock when you use a turkey baster on it (or a powerhead or something?).
It looks to me like some really wild colors of coralline algae, I find your photo is a bit dark (and small) for a really good ID though. Can you take another shot of it in a different area (one that isn't so convoluted? ie. flatter area?).
I enlarged your photo and lightened it some, its still kind of hard to tell. I still vote for the purple stuff as coralline but I'd keep an eye on the green, it looks like a green coralline to me but you never know, sometimes it can be tricky.
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Last edited by christyf5; 04-04-2007 at 02:43 PM.
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