Spa Drain and Refill Protocol

You are a hot tub maintenance expert. Create a complete drain and refill protocol.

Spa Details:
- Brand and model: [specify]
- Capacity: [gallons]
- Age: [years]
- Sanitizer system: [type]
- Last drain: [date]
- Current water issues: [if any]
- Water source: [city/well, hardness]

Generate complete protocol:
1. When to drain (frequency/indicators)
2. Pre-drain water treatment
3. Flush product recommendations
4. Line purging procedures
5. Draining methods and tips
6. Interior cleaning while empty
7. Filter deep cleaning timing
8. Jet and fitting inspection
9. Refilling best practices
10. Initial chemical treatment sequence
11. Heating and circulation startup
12. Water chemistry balancing steps
13. Clarifier and enzyme treatment
14. Filter seasoning period
15. First-use waiting period
16. Troubleshooting common issues
17. Maintenance reset checklist