Is it worth buying CYA? I had a new vinyl liner installed over the winter and fresh water was put in. I've got it all cleaned up and it's ready to go but there's no CYA in the water (and I mean no) so it's burning through chlorine. I currently use the liquidator but before my rebirth I used pucks and powdered shock. I find the pucks build the CYA up pretty rapidly and I've got a bucket of them so I was just going to use them until the CYA is in the right range and then switch back to bleach. I'd be interested in hearing whether people think that's a good approach and if not why.