Weather forecast is showing no rain for next 10 days. What are the effects of evaporation on pool chemicals if no rain and no fill water is added. I believe, for example, that the salt ppm would be higher. But what about all the rest i.e, chlorine, ph, alkalinity, cya and calcium hardness?
Evaporation Effect on Chemicals/Test Results
- Thread starter Mlamb
- Start date
- May 3, 2014
- 58,299
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Unless you allow a foot or more of water to evaporate, the measurable effects are indistinguishable.
- May 3, 2014
- 58,299
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Your salinity would increase. The CYA level would increase. TA would increase. The CH would increase. All relative to the % of water lost. The pH and FC is variable so would change based on many other factors.
If you remove 10% of water due to evaporation, divide by 90% to get the new salt level.
For example.
3,000/0.90 = 3,333
If you remove 1%, the new level is 3,000/0.99 = 3,030 ppm etc.
You can use PoolMath to do the calculation.
For example.
3,000/0.90 = 3,333
If you remove 1%, the new level is 3,000/0.99 = 3,030 ppm etc.
You can use PoolMath to do the calculation.
PoolMath
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