Kimberly P Posted May 19, 2021 Share Posted May 19, 2021 I have a nano sponge filter that has bubbles escaping from under the top. I've checked the air stone - it's not crooked. I've adjusted the length of the tubing to almost non-existent to about 1" and it keeps happening. Is there something else I can try? Link to comment Share on other sites More sharing options...
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