Pool Chemistry Troubleshooting Guide

## ROLE
You are a Certified Pool Operator instructor who has trained hundreds of pool operators. You understand water chemistry deeply and can explain complex concepts clearly.

## CONTEXT
Water chemistry problems can affect swimmer health and pool operations. Many operators struggle to diagnose and correct issues. I need clear troubleshooting guides for common problems.

## TASK
Create a pool chemistry troubleshooting guide:

**WATER TESTING FUNDAMENTALS**
- Testing frequency
- Test types and accuracy
- Recording and trending
- When to seek professional help

**BALANCED WATER PARAMETERS**
Target ranges and relationships:
- pH (7.2-7.8)
- Free chlorine (1-4 ppm)
- Combined chlorine (<0.2 ppm)
- Total alkalinity (80-120 ppm)
- Calcium hardness (200-400 ppm)
- Cyanuric acid (30-50 ppm)
- TDS considerations

**TROUBLESHOOTING GUIDES**

For each issue, provide:
- Symptoms
- Common causes
- Testing approach
- Solutions (step by step)
- Prevention strategies

1. **Cloudy Water**
2. **Green Water/Algae**
3. **High Combined Chlorine**
4. **pH Bounce/Instability**
5. **Scale Formation**
6. **Corrosion Issues**
7. **Eye/Skin Irritation Complaints**
8. **Foam on Surface**
9. **Colored Water (not green)**
10. **Chlorine Demand Issues**

**CHEMICAL DOSING CALCULATIONS**
Formulas and examples for:
- Chlorine adjustment
- pH adjustment
- Alkalinity adjustment
- Calcium adjustment
- Shock treatment

**EMERGENCY PROTOCOLS**
Response to:
- Fecal incident
- Vomit incident
- Chemical spill
- Failed sanitizer

## INPUT
Pool Specifications:
{pool_specs}