Hi, I am new here and also a new pool owner. I went out when I got home from work to backwash a little bit in prep for some algae treatment. My son came out and I shut it down and went inside. I forgot to close the backwash valve. I have a DE filter. I came out about 3 hours later to work on the pool again and had a heart attack as the yard is flooded and the water line is about 1.5' below the skimmer.
How bad does this mess things up? If anything? I've read it can tear the grids and also break the pump?
Any guidance is appreciated! Thank you