Hot Tub Forum

Brand Specific Forums => Hot Spring Spas => Topic started by: Chops1857 on October 12, 2022, 11:31:19 pm

Title: Freshwater salt and calcium hardness
Post by: Chops1857 on October 12, 2022, 11:31:19 pm

Is it a problem if you lower the hardness below 50? I used the vanish pillow and my hardness is at about 20-25. Should I get some calcium and try to raise it to 50? Will hardness below the stated target harm the tub?

Title: Re: Freshwater salt and calcium hardness
Post by: cranbiz on October 13, 2022, 09:20:43 am

Hardness isn't as important in an acrylic tub but does help prevent foaming. You want the CH above 50ppm and usually around 150ppm. If you are not having foaming problems, you really don't need to do anything.

Title: Re: Freshwater salt and calcium hardness
Post by: Hottubguy on October 13, 2022, 01:43:03 pm

Freshwater salt tubs it works best between 25-50 PPM I’ve found

Title: Re: Freshwater salt and calcium hardness
Post by: Chops1857 on October 13, 2022, 09:51:07 pm

Hardness that low doesn’t damage other components? I’ve always head how water that soft is corrosive and damaging.

Title: Re: Freshwater salt and calcium hardness
Post by: Sammi on October 13, 2022, 11:58:57 pm

Did you get the Freshwater test strips with your starter kit? They show ideal hardness is 25-50 for a salt spa. I recommend purchasing the On the Go Portable water softener. It literally pays for itself in 3 tub fills vs the vanishing act pillows.