Duel air pump not working for one side?

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KFav93

Aquarium Advice Freak
Joined
Oct 11, 2016
Messages
250
I have an air pump with 2 hoses. One hose runs to one of my 20 gallon tanks and the other to my other 20 gallon tank. The one is working fine. The other one does not have a consistent flow of bubbles. It just keeps skipping and spitting out bubbles. It was working fine before I left for the weekend on Friday. I just want it to go back to having a consistent flow of bubbles. Any suggestions? Could it be the air stone?
 
It could possibly be a clogged air stone.
Have you tried taking the pump apart? I have not worked on one in a long time, but I remember having to change the flapper valves and rubber diaphragm when there was obvious wear and poor performance.
 
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