Chlorine (or other approved disinfectant) and pH levels should be checked and recorded on a maintenance log at least once per day. Cyanuric acid levels should be checked and recorded at least once per month. Other chemical tests (such as alkalinity, calcium hardness, and total dissolved solids) should be checked regularly to maintain proper water balance.
Chemical Requirements
| Minimum Amount |
Desired Amount |
Maximum Amount |
When to Check and Record |
|
|---|---|---|---|---|
| Free chlorine without “stabilizer” |
1.0 ppm | 1.5 ppm | 10 ppm | Daily |
| Free chlorine with “stabilizer” |
1.5 ppm | 1.5 – 3.0 ppm | 10 ppm | Daily |
| “Stabilizer” (i.e., Cyanuric Acid) |
0 ppm | Up to 50 ppm | 100 ppm | Monthly |
| pH | 7.2 | 7.4 – 7.6 | 8.0 | Daily |