Air valve for durso standpipe?

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Gatorfreak

Aquarium Advice FINatic
Joined
Aug 27, 2004
Messages
617
Location
Gainesville, FL
I have a durso standpipe in the overflow of my 90g. It's been going ok for over 2 years now but I'm always having to adjust how much air it needs let into it. It'll be fine for a few weeks and then the water level in the overflow will starting going up and down and making gurgling noises. Does anyone else have this problem?

I was thinking if there was some kind of air valve that I could use that would let in air based on how much it's sucking it in. Maybe something with a rubber flap that has to be sucked open. Just a thought.

I can't be the only one with this issue... can I?
 
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