Collette Posted October 9, 2021 Share Posted October 9, 2021 Every so often, these oddly-shaped little spots of white show up on the inside of the glass of my shrimp/betta tank. It doesn't seem to be causing any trouble to the animals, and usually the spots will just go away on their own and pop up somewhere else in a few weeks. Can anyone tell me what this is? 1 Link to comment Share on other sites More sharing options...
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