yes, kapnd, good suggestion. i did recently shred an impeller, but it had been pumping fine until i pulled and replaced the zincs. hoping to find a solution that didn't involve pulling out a bunch of hoses, but that hope is diminishing...
can't quite imagine how impeller shreds get upstream, but i've heard that before, so that's where i'm gonna start. should i replace hoses while i'm at it? what's the life expectancy of such things?
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