Anyone know what / why this is. Fluval EVO - all looks good level wise. Everyone happy. But I noticed these bubbles, not sure if just getting trapped from the outflow blocking…… any ideas?
What's the emergency?
Also, are the bubbles coming out of the return nozzle? If so, air is getting in somewhere.
Typically I don't see standing bubbles like that from air though. Any possibility any contaminants got into the tank?
