Air pump issue

[OwduaNM]

I have a Top Fin air pump with two outputs. I have then hooked up to two different bubbling decorations. At first they both bubbled perfectly. Now, one of them barely has any bubbles coming out of it.

Does anyone have an idea what may be causing that?

 

[J1Time]

Kinks in line? Gang valve messed up or closed? Hook one line to the other output and see if its a direct cause from the pump

 

[OwduaNM]

No linked lines and I am not using any gang valves. I think that the second output line is failing at the pump. I will swamp the lines later today to test it.

 

[IShallNtEatFish]

Also check and see if there is air coming out of the pump. If not the filter on the pump might need to be changed

 

[Fresh2o]

Also check and see if there is air coming out of the pump. If not the filter on the pump might need to be changed

If none of these work then you may have to take the diaphragm and valve assembly apart and inspect it. I have not done this in years but I am guessing the basic design has not changed much.