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...
MickS77 Posted October 7, 2020 Share Posted October 7, 2020 I don't think its anything to worry about. It looks like some kind of fungus, mycelium, or freshwater sponge. Link to comment Share on other sites More sharing options...
Ajcross222 Posted October 7, 2020 Author Share Posted October 7, 2020 Great, thank you! Link to comment Share on other sites More sharing options...
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