andy36yr19
Fish Fanatic
- Joined
- Oct 7, 2018
- Messages
- 74
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Ok thanksIt looks more like gunk (biofilm) from dirty and debris in the tank that is collecting in that area. Try wiping it out each day with a clean fish sponge. Smell it and if it smells musty or mouldy it could be blue green algae (Cyanobacter bacteria).
My shrimp would love to munch on all that gunk.It looks more like gunk (biofilm)