Scale buildup on shell, heater, and jets (white crusty deposits)

Safety first: Use descaling chemicals according to manufacturer instructions and avoid mixing incompatible products.

• 1. Test hardness and pH:
  • Measure calcium hardness, pH, and alkalinity.
• 2. Adjust chemistry:
  • Lower pH and alkalinity if high.
  • Use a scale inhibitor product to help prevent further buildup.
• 3. Clean visible scale:
  • Drain spa and gently scrub scale from shell and jets with a non-abrasive pad and spa cleaner.
• 4. Heater inspection:
  • Have a technician inspect the heater for internal scale; severe buildup may require heater replacement.
• 5. Use pre-filter on fill water:
  • Consider a hose pre-filter when refilling to reduce hardness.