New pool owner

[PoolDoc]

Too much water on the cover can pull the cover into the pool, and dump all that swamp water in. Better get (or borrow) a small electric pump and remove the water.

But, FIRST, I'd check that pump to make sure it's not working. It could be that the GFCI just tripped, and that it will run if you reset.

[Watermom]

and dump all that swamp water in.

Yep. Been there, done that, have the ugly pics! Just another reason I don't cover my pool in the winter anymore!

[PoolDoc]

Want to send me the ugly pics, Watermom? I'll post them under someone else's name!