The fish lie on the bottom of the aquarium or are stuck to the filter... Even though they are liing on the bottom they are still alive... Please please help
Answers (1)
Not enough oxygen in the water probably or the water is too hot or too cold or not salty enough or too salty (you didn't say what kind of tank) or the fish are all sick (they can catch diseases), it's possible the filter is set at too high a speed which would explain why they are stuck to it (is it a vertical or bed filter?).. Need more details...
type of fish, size of tank, tropical or cold water, fresh or salt water, number of fish, lighting and filter types...
Do you have an oxygenator? If not the fish will be suffocating.
I think that the filter is too strong... That would explain a lot... Thanks
It may also be that the filter is NOT breaking the surface of the tank, you may need to raise the filter unit to do so. Air and water should be going through the filter unit.
Oh ok
The tank is 21 litres, the water is sweet, there are 8 fish in it, the filter: ferplast blucompact