sump with over flow questions

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Aquarium Advice Activist
Mar 18, 2009
ok so here is my problem i have a 60 gallon tank with a magaflow 2 sump underneath it. I have a hang on back over flow box and then i used pvc pipe to hook them together and now it makes loud bubble noises all the time its a constant flow but i was wondering how do i make it quite. right now i am running the sump and a canister filter so i can turn off the sump pump at night

any help would be nice

a gurrgling noise? my overflow does that too with the vacuum pump hooked up to it. is your sump full?
and the sound it makes is the air being forced out and the bottom of the sump so its like and loud bubbling noise
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