I bought new sand and CYA. I got the stuff from Lowes made by Aqua Chem.

I guess I'll shoot for 30. I think I'll start at 25 just to have some room.

According to the bleach calculator program - I'll need 4.5 pounds of CYA

I think the label said it was 100 % CYA

The stuff at the pool store wasn't and the guy said it was conditioner that's why it had other stuff in it.