Hi all! I have a vinyl pool, so I don’t worry with calcium hardness for it, but I’m not sure if it is important for the hot tub-? Thanks in advance, and have a great weekend!
Is calcium hardness important in hot tub?
- Thread starter Smittysmith
- Start date
- Jun 22, 2014
- 52,015
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
It may not apply to the fiberglass or acrylic shell itself, but you still want some CH in a hot tub to help prevent foaming. A CH range of 130-150 is recommended for that purpose. If your local water is hard, you might get by with a slightly lower CH, but I wouldn't go any lower than 100. If the CH get slow and you see foaming, it's time to add some.
