Is it brand new or been around awhile?
If it has been around awhile, sometimes something gets stuck like a MTS snail. If it is brand new then sometimes there could be something from manufacturing in there making noise or it could be faulty.
Is there a motor you can take of with the impeller inside and open it clean it out and put it back?
Also if it is new, I would just return it if taking it apart and putting it back doesn't work.
FW & SW
Favorite tank right now - 72G Bowfront Wadai Tetra, Cardinal Tetras, Ghost Glass Cat Kryptopterus bicirrhis and Clown Loach Cory haven
New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
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