Thanks,
Maybe I'll try a large foam block in the sump, perhaps that will do something...
I have been contemplating changing the one pump to a PCX40 which runs at 3000 rpm as opposed to 3200 rpm. As it stands I have 2 pumps running at 3200 rpm each. (Identical pumps) Would changing one out so they are running at different RPM change anything? (3200 & 3000)
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