These little tube looking things started to appear in my tank over the last month or so.I have not added anything recently, so it must have been in the system for a while.
Some are a deep purple/pink, while others a white. Mostly on the rock, but also on one of my wavemakers.
what the heck are they?

Some are a deep purple/pink, while others a white. Mostly on the rock, but also on one of my wavemakers.
what the heck are they?

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