Chugging vertex skimmer...?
My vertex in80 sounds like it's not sucking air as well as it should. It makes a chug chug chug sort of a sound... Almost like it's on and off on the suction. I've only had the skimmer for a few weeks now...and it was new. Any ideas? If I blow steadily into the air intake tube it sucks steadily and more foam seems to be produced.
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