hitchhiker help
I have a new aquarium with new live rock. There is a purplish flower on a couple of the rocks that when i move the magnet cleaner by it, it quickly sucks back into a little ball, virtually disappearing. Can anyone tell me what this is and if it's at all harmful to anything?? Thanks in advance!!
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80g Cylinder Reef tank established Nov/07
2 black clowns, Rose BTA, Fox Face, 2 scooter blennies, Yellow tang, cleaner shrimp, sand sifting star, blue regal tang
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