1. The Importance of Filtration
Effective filtration is essential for maintaining clean and healthy hot tub water. Filters act as the first line of defense, capturing dirt, debris, and organic matter.
- How Filters Work: Water passes through the filter media, which traps solid contaminants while allowing clean water to flow through. The pleated design increases surface area, boosting dirt-holding capacity.
- Filter Maintenance: Regular cleaning ensures optimal performance. BISHTA recommends weekly rinsing with a garden hose and monthly deep cleaning using a specialist filter solution. Note: Never use a power jet washer, as it can damage the filter material.
- Filter Replacement: Replace filters annually or every two years if using two sets in rotation.
2. Water Chemistry: Maintaining Balance
Proper water chemistry is crucial for bather comfort and the longevity of your hot tub. Important parameters include pH, total alkalinity, and sanitizer levels.
- Daily Checks: Use test strips to monitor sanitizer and pH levels. Ideal ranges: pH 7.0-7.6, bromine 2-4 mg/l, inorganic chlorine 2-4 mg/l, organic chlorine 3-5 mg/l.
- pH Control: High pH can reduce sanitizer effectiveness and cause scaling, while low pH can lead to corrosion. Adjust with pH increaser or reducer as needed.
- Sanitizer Control: Chlorine or bromine helps kill bacteria. Maintain proper levels, and consider using a built-in tablet dispenser. Note: Consult your retailer before switching between chlorine and bromine to avoid dangerous chemical reactions.
- Weekly Checks: Run jets and waterfalls to check for foaming and water clarity. Use foam suppressants or clarifiers if needed.
- Monthly Checks: Clean surfaces and replace filters with a clean set. Reassess and adjust pH and sanitizer levels.
- Quarterly Checks (Water Changes): Drain and refill the hot tub every 1-3 months, depending on usage. Use a system flush to clean the pipework beforehand. Note: Up to 10% of UK drinking water may contain legionella, which is safe to drink but should not be heated in your hot tub.
3. Troubleshooting Common Issues
- Cloudy Water: Often caused by particles too small for the filter to capture. Solutions include:
- Adjusting sanitizer levels as needed.
- Shock dosing to oxidize contaminants.
- Ensuring filters are clean and functional.
- Using a clarifier to bind particles for better filtration.
- Foamy Water: Results from product build-up and Total Dissolved Solids (TDS). Reduce foam by:
- Showering before use to remove oils and contaminants.
- Rinsing swimwear in clean water after each use.
- Using high-quality chemicals and performing regular shock treatments.
- Opening the cover regularly for aeration.
- Shock Treatment: Essential for breaking down contaminants and reactivating sanitizers.
- Perform weekly and after heavy use sessions.
- Use non-chlorine shock for quicker re-entry.
- After shocking, check pH, alkalinity, water hardness, and bather load to resolve any lingering cloudiness.
4. Preventative Measures
- Shower before use and avoid lotions, cosmetics, etc.
- Rinse swimwear in clean water only.
- Keep the cover on when the hot tub isnt in use.
- Clean filters regularly and replace annually (or biannually with rotation).
- Maintain proper water chemistry and shock dose weekly.
- Consider annual professional servicing for optimal performance and safety.
By following these maintenance steps, hot tub owners can enjoy clean, clear, and healthy water for a relaxing and trouble-free spa experience.
