Rena XP3 with air??
Somehow my canister filter is spitting out air. I looked at it and it looks like the top portion is filled with air. There isn't anything near the intake that could create this. Can anyone tell me why this would suddenly start to happen? This filter has been running for at least 2 months and this just started. ( I had it running significantly before I added fish).
Thanks for any ideas.
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