Ajcross222 Posted October 7, 2020 Share Posted October 7, 2020 (edited) Hi, Wondered if anyone knew what these are that have appeared in a small aquarium I have. There's no light on the tank it's set up on a windowsill that gets a little bit of direct sunlight. I had a lot of algae problems with it to start with but now that's gone away these have shown up. There are quite a few on the glass and there are others that are a bit bigger, but this is the best picture I can get. Never seen them before anyone know what they are and should I be worried? Thanks, Adrian Edited October 7, 2020 by Ajcross222 Link to comment Share on other sites More sharing options...
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