Thank you Richard. We previously used a Hayward chlorinator with the pucks inside. Since I started doing the BBB method, I add bleach in the evening in front of the deep end return jet. I didn't brush immediately afterward, but if that helps protect my liner, I can do that. I didn't remember why the pucks were bad (Other than much more expensive) but remember now about them raising the CYA level.

Ok, I'm just going to stick with the BBB then. Thank you for your help.