Spreadsheet: 733365d1621527913-conditioning-formatting-failing-chemistry_vf
Sheet: data

 | https://www.troublefreepool.com/calc.html |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Ideal Range |  |  | Comments
 |  |  | 2021-05-12 00:00:00 | 2021-05-12 00:00:00 | 2021-05-18 00:00:00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Accept Min | Lower | Upper | Ideal Plaster
 |  | Free Chlorine (FC) | 2.36 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 3 |  | A sanitizer which keeps your pool water safe and free of germs. Chlorine must be constantly replenished. (level depends on CYA). [NAME] is the amount of chlorine that has not yet combined with chlorinated water to sanitize contaminants.  Free chlorine level must remain higher than the combined chlorine level.
 |  | Combined Chlorine (CC) | 0.53 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.2 | 0.5 |  | An intermediate breakdown product that is created in the process of sanitizing the pool.   If CC is above 0.5, you should shock your pool. Combined chlorine indicates that there is something in the water free chlorine is in the process of breaking down. In an outdoor pool, combined chlorine will normally stay near zero so long as you maintain an appropriate free chlorine level and the pool gets some direct sunlight.
 |  | Total Chlorine (calculated from FC and CC) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 3 |  | The sum of free chlorine and combined chlorine
 |  | pH | 7.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.2 | 7.6 | 7.8 | 7.6-7.8 | Acidity/Basicity – Needs to be kept in balance to prevent irritation and protect the pool equipment. The key to proper water balance is to keep your pH level between 7.4 and 7.6; your alkalinity level between 80 and 120ppm for concrete/gunite pools  and your chlorine level between 1  and 1.5 ppm.
 |  | Total Alkalinity (TA) | 58 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50-60 | 60 | 80 | 60-80 | Appropriate levels help keep the pH in balance. High levels can cause pH to rise.
 |  | Calcium Hardness (CA) | 124 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200 | 400 | 50-550 | Appropriate levels help prevent plaster damage. High levels can cause calcium scaling.
 |  | Cyanuric Acid (CYA), aka stabilizer | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30-40 | 40 | 50 | 40-50 | Free Chlorine – A sanitizer which keeps your pool water safe and free of germs. Chlorine must be constantly replenished. (level depends on CYA)
 |  | Iron (Fe) | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0.3
 |  | Copper (Cu) | 0.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0
 |  | Phosphates | 1182 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 100 |  | Doesn’t matter, despite pool store claims otherwise.  Metal removers have phosphate as ingredient; remove it and metals may come back.
 |  | TDS (total dissolved solids) | 400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 2500
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Calculator: | PoolMath
 |  | Added: (after readings) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Other info: | https://www.swimuniversity.com/pool-phosphates/
 |  | Bleach (7.5%, oz) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | https://www.troublefreepool.com/blog/2018/12/12/abcs-of-pool-water-chemistry/
 |  | CaCO2 (lbs) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | CSI:
 |  | Muriatic acid 15.7% 10* Baume (to lower pH) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | https://www.pentairpool.com.au/128/Calculators/Saturation-Index-Calculator
 |  | Dry acid (to lower pH)
 |  | [NAME] (add to ^ stabilizer) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | [NAME] (Stabilizer) | Minimum FC | Target FC
 |  | pH down |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20* | 2 | 3-5
 |  | Baking soda (for TA raising) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30* | 2 | 4-6
 |  | Borax (for ph raising) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40 | 3 | 5-7
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50 | 4 | 6-8
 |  | Which chemicals to use: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 | 5 | 7-9
 |  | https://www.troublefreepool.com/blog/2019/01/18/recommended-pool-chemicals/ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70* | 5 | 8-10
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 80* | 6 | 9-11
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90* | 7 | 10-12
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100* | 8 | 11-13