olbustedhotness
Aquarium Advice Apprentice
- Joined
- Mar 13, 2015
- Messages
- 13
It looks like a bad case of Cyanobacteria (BGA, blue green algae). I would pickup some erythromycin from the lfs or big box store and treat the tank. You should be able to remove a good deal of it via siphoning during the next water change (before you start treating).
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