maintaining fiberglass pool

Hi, I just moved to a new home with a saltwater pool in Chesapeake, Virginia. I just learned that our saltwater generator doesn't make chlorine when it's cold, and I'm trying to understand how to beat maintain the pool until it's warm enough for the SWG to takeover again. It doesn't get super...

I have an older fiberglass pool that was refinished 2 years ago. The sides of the pool are chalking. You rub your hand on the surface and a creamy white chalky material comes off on your hand. I have been told that it is do to low calcium and I’ve also been told you need to use a sequestering...