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Hi, Does anyone know a good source of Ahh Some in France? (Or any source!)

As I understand it, if there is sufficient CYA in the hot tub, as much as 20X calculated Cl needs to be added as pool math calculates. This is because the approximate equilibrium point of CYA bound FC is about 95% of the total FC. To some degree, this is as much a question as a statement - I'm...

Hi, I was making good progress and now things seem a bit off. I have a 1450 liter hot-tub running at 104F. The tub is a Sundance-Optima. It does have a UV lamp. I had the water in balance before I left for two weeks. A friend who is very careful watched the tub while I was gone and recorded the...

Hi, I've decided to go with this apparently clear approach to setting up and maintaining a hot tub with well water at 6700 feet in Wyoming. I didn't feel good with the inconsistency that I felt I was getting with a service that had different people coming at different times. I'm hoping that...