Replacing water to get rid of CYA

[xcapecod83]

Larry,
Welcome to the forum.
On the draining...should be no need to rent a pump. Use the vacuum hose in the skimmer. Should let you drain well below skimmer level. Or, you can get a cheap Flotec sump type pump at Home Depot for $70 or so. Handy thing to have anyhow.

Thanks, Al. A couple of questions. I'm not sure what you mean using the vacuum hose in the skimmer. Also, for the plastic sheets do they just float on the surface? I have one of those kidney shaped pools.