What causes scale in my CalderaSpas Spa?
- LLeslie BoothSep 23, 2025
Scale in your CalderaSpas Spa is often caused by high calcium content in the water, or total alkalinity and pH levels that are too high. To address this, adjust the total alkalinity and pH. If scale removal is required, drain the spa, scrub off the scale, refill the spa, and balance the water.







