I was late getting my pool cover on last fall. And I woefully neglected the pool over the winter. When I took the cover off to get the pool ready you could see to the bottom but it wasn't pretty because there was a ton of leaves. The water is way too cold to get in so I drained about 3/4 of the water so I could get in with rubber boots and I got most of the leaves out but there's an ugly film across the bottom that looks mustard colored, but it's everywhere. Filled the pool back up. I just tested the water:
I got Diver Dave going and you can see a little trail everywhere he's been LOL. I'm about to begin the SLAM process, but I'm wondering could/should I get some CYA in it at the same time or should I wait until I've cleared up the mess? I can hang a sock, but I can't recall if it can be done during the SLAM process.