For a rattling noise, check to see if the impeller is inserted and spinning properly, for a humming noise, maybe the filter cartridge isn't sitting inside properly, making the lid rattle. The filter should be quiet, or exchange it if you can't find the cause of the noise.
answered 3 months, 1 week ago
Humbolt County, CA
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Make sure you leave at least an inch without water at the top of the tank. This filter is a bit louder than some, but it does a superior job of keeping the tank spotless. Move the TV?
answered 2 years, 7 months ago
1out of 3found this answer helpful.