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Discussion Starter · #1 ·
So after a search, I cant seem to find anything about this.

I have some bright pink algea growing on the suction cup for my thermometer. Atleast I think its algea, its definetly spreading, but not to the silicone tank seams yet. Its not on anything but the suction cup.

Is it even algea? Or maybe just a chemical reaction changing its color? I have the same suction cups in 3 other tanks, under the same basic conditions and there are all still clean and clear.

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