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#1
01-23-2010, 04:47 AM
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Could be pineapple sponges, they're fine and will likely disappear once you get some light on the rock
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#2
01-23-2010, 07:34 PM
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yeah sounds like pineapple sponge to me too. Some species of sponges can exhibit different colors depending on... well actually nobody really knows why, but it happens. harmless filter feeder. Enjoy them while they're there though, in most tanks, they tend to disappear after a while.
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