We've been trying to clean up a badly flooded pool for the last two weeks. This morning, after another vacuuming session we restarted the pump. A few hours later I stopped the pump to check for debris in the baskets, and as the pump stopped, a bunch of dirty water shot up from the skimmer. (It sent the skimmer lid up about a foot.) The baskets were pretty clean so I restarted the pump. A few hours again, when I went to check things, the same thing happened. What's causing this? Am I getting too much air the pipes? After running the pump all day, the water didn't seem to get even a tad bit clearer, so it definitely seems like something isn't working right.
Also, I got my T100 test kit today and tested my water. Here are the numbers:
CYA - less than 20, I filled the whole tube up and I could still see a faint black dot
My question is, what could be causing my TA to be so high, considering my pH is normal? With an FC so high, do I need to worry about the CYA being so low?