Is there a way to change the Calcium Hardness target in the app? According to How do I use Chlorine in my Spa (or pool)? I should be shooting for 130-150. The app defaults to 250-650. Any way to change the target so the app doesn't fuss at me? What do others do?
PoolMath with a Spa?
- Thread starter megalodon
- Start date
I am not familiar with the pool math app. I assume it is calculating saturation index. Balanced water is what you are after, and calcium is one of 4 variables that determine balance. Having calcium that low means your ph and alkalinity must make up for it. And calcium that low could damage plaster and concrete pools, tiles, and liners. Less of a concern in a portable spa, but still a factor.
For example, 150ch, 100alk, 7.6ph is balanced at 100*. 250ch, 80alk, 7.4ph is balanced at 100*. 400ch, 60alk, 7.4ph is balanced at 100*. I use the slide rule included in the taylor k2005 test kit to determine balance.
I am sure @JoyfulNoise or @mknauss could help you with the app.
For example, 150ch, 100alk, 7.6ph is balanced at 100*. 250ch, 80alk, 7.4ph is balanced at 100*. 400ch, 60alk, 7.4ph is balanced at 100*. I use the slide rule included in the taylor k2005 test kit to determine balance.
I am sure @JoyfulNoise or @mknauss could help you with the app.
- May 3, 2014
- 62,705
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Welcome to the forum!
I assume you are selecting Fiberglass as your surface in the Poolmath app.
That is the range we have for Fiberglass. It covers the potential needs for some fiberglass and also will cover your heater. If you prefer a different level of CH, just change the Target in the app.
Poolmath uses CSI - Calcium Saturation Index (CSI) - Trouble Free Pool. Though you should not have to worry about that.
I suggest you read ABC's of Pool Water Chemistry.
I assume you are selecting Fiberglass as your surface in the Poolmath app.
That is the range we have for Fiberglass. It covers the potential needs for some fiberglass and also will cover your heater. If you prefer a different level of CH, just change the Target in the app.
Poolmath uses CSI - Calcium Saturation Index (CSI) - Trouble Free Pool. Though you should not have to worry about that.
I suggest you read ABC's of Pool Water Chemistry.
- May 23, 2015
- 25,708
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Not really. Those are hard-coded to match recommended POOL levels that are taught on the forum. You can, however, ignore the warnings (turn then off) by going into settings (gear icon) the scroll down to “advanced settings “ -
