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Cultivated Reef

Stony things on LR


Waterproof

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A bunch of these have appeared on a couple of my pieces of LR - some on the rock, some on my macroalgae. I picked one off of a zoa today (2nd pic). Any idea what they are? The one on the zoa was white, but the rest look brown. When I took it out, it felt hard like a stone. They are really tiny (2-3mm). Any ideas?

 

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Foraminiferan

 

Thanks, scottyreef. From what I've read, they seem harmless. Unless I hear otherwise, I'll just leave them in the tank.

 

J.

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