I added the CYA last Friday. I added it through the skimmer so I haven't backwashed yet. I did give in to the urge to test it before the week is up....and it was only a slight bit clouded at the very top of the tube. The pump has been running 24/7. My kids plus the neighbors kids are begging to swim today...8 kids total....which means I will probably be shocking tonight anyway.

I was thinking of adding some DE to the filter to see if that would help get the water just a bit clearer.