Calcium hardness

[HappyBubbles]

I have CH of 220 in my spa and based on my reading that number is not an issue. I was trying to figure out and search for low calcium levels and how that would affect things. I couldn't find anything, but curious what would say less than 100, or even 0 CH water be like. Would that water feel better, would it damage anything in a fiberglass tub?

 

[mknauss]

In your tub, the only reason you need calcium in the water is to reduce/eliminate foaming. So anything over about 50 ppm CH should achieve that.

 

[HappyBubbles]

In your tub, the only reason you need calcium in the water is to reduce/eliminate foaming. So anything over about 50 ppm CH should achieve that.

Thank you sir. Any disadvantages of having CH at 220?

 

[mknauss]

Thank you sir. Any disadvantages of having CH at 220?

No.