Today, Stealing versions of others ideas for my own use as I often do, I used a hose to drain most of my sump water and the detritus builup - into the floor drain in my basement. It helps to have your sump up on a stand like mine is. I already had ~20G of SW I just mixed in my mixing container (trash can on wheels) with a Mag 3 and a heater in it. Pumped that water back into the sump with the same Mag 3, restarted the RP, and done, not a one bucket lifted! My back thanks me some.