Fluval Flex 15 gal filter not working

[clownfishmama]

Hello everyone. I recently cleaned the Fluval Flex 15-gallon filter, but after reattaching it, the water flow is low. I noticed that the water level in the filter compartment is typically lower than in the tank, but now it seems to be filling up and not draining properly. Does anyone know what might be wrong?

 

[clownfishmama]

bump.

 

[MoshJosh]

If the filter was exceptionally dirty before, that would explain why you had low water level in the pump chamber, and now you have a higher water level. Though that would not explain a change in flow coming from the pump itself. Is the changing water level the only issue or is the actual flow coming out of the nozzle different? if the flow from the nozzle is lower, the only thing I could think of is that during cleaning you adjusted the slider on the side of the pump that reduces the intake, but if you did not mess with the pump itself, that is unlikely.

 

[clownfishmama]

If the filter was exceptionally dirty before, that would explain why you had low water level in the pump chamber, and now you have a higher water level. Though that would not explain a change in flow coming from the pump itself. Is the changing water level the only issue or is the actual flow coming out of the nozzle different? if the flow from the nozzle is lower, the only thing I could think of is that during cleaning you adjusted the slider on the side of the pump that reduces the intake, but if you did not mess with the pump itself, that is unlikely.

I might have accidentally adjusted the slider because I did in fact twist it around so it could be tighter, do you know how to adjust it back to its original settings I lost the tank manual.