Small sludge pump?

I already have that Suttner sucker that attaches to a wand, but I think it would make more sense to plop something small down in the low spot and keep trucking on the surface cleaning.

Any experience, maybe a battery powered sump pump?

There’s lots available type pumps for this that are battery operated. Question is which actually work and work well.

That is slick, thank you! Looks like Lowes has it.

Those things hate pebbles and being run dry!

Suggestions?

My experience with those pumps comes from plumbing repairs in people’s crawlspaces.

Usually there’s a pit dug below grade, with a 10 or 20-gallon container inside. The container has holes drilled, screen around it on the outside, and is set in gravel so ground water enters the bucket and a float switch trips the pump on.

If the float switch malfunctions and the pump runs dry, the seals on the motor overheat. They’re not expensive, but I don’t think they will do what you want it to do.

You can buy run-dry pumps for a few hundred bucks, but I’ve never seen a 12v version. Best you’ll find is a pump that senses lack of water and shuts off; you’ll have to manually untrip the breaker