1.9 Water Chemistry Abbreviations/Acronyms & Levels
| ABBREVIATION / ACRONYMS | DEFINITION CORRECT | CHEMICAL LEVELS |
| CH | Calcium Hardness | 50 – 150 ppm |
| TA | Total Alkalinity | 80-100 ppm |
| pH | Potential Hydrogen | 7.2 – 7.6 ppm |
| FCL | Free Chlorine | 1 – 3 ppm |
| ORP | Oxidation–Reduction Potential | 600 – 1000 |