Bestway Limescale Buildup

Scale or white deposits forming on heater, jets, or spa walls

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Possible Causes

Hard water with high calcium, High pH and alkalinity, Infrequent descaling of heater, Evaporation concentrating minerals

How to Fix / Troubleshooting

Safety first: Turn off and unplug the spa before scrubbing or using any descaling chemicals.

  • Test hardness: Use test strips to check calcium hardness.
  • Adjust chemistry: Keep pH and alkalinity within recommended ranges to reduce scaling.
  • Clean deposits: Drain the spa and gently scrub scale with a non-abrasive pad and a spa-safe descaler.
  • Use scale inhibitor: Add a scale control product compatible with Bestway spas to help prevent future buildup.

Severe scale inside the heater can reduce efficiency and may require heater replacement by a technician.

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Repair Difficulty

Easy 2/5

Required Part

Heater Assembly
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