Protect your hot tub and maintain balanced water chemistry with Natural Chemistry Spa Calcium Increaser. This fast-dissolving formula raises calcium hardness levels, helping prevent corrosive water conditions that can damage spa equipment while improving overall water balance.
Calcium hardness is an essential part of proper spa water chemistry. When calcium levels are too low, the water can become aggressive, potentially damaging heaters, pumps, plumbing components, and acrylic spa surfaces over time. Natural Chemistry Spa Calcium Increaser makes it easy to raise calcium hardness to the recommended range, helping protect your investment while creating a more stable water environment.
Designed specifically for hot tubs and spas, this easy-to-use granular formula dissolves quickly and integrates seamlessly into your regular water care routine. Whether you're filling your spa with naturally soft water or adjusting water chemistry after a refill, Spa Calcium Increaser helps establish the proper foundation for balanced water.
Features & Benefits
- Raises calcium hardness in spa and hot tub water
- Helps protect heaters, pumps, plumbing, and spa surfaces
- Reduces the risk of corrosive water conditions
- Supports balanced, stable water chemistry
- Fast-dissolving granular formula
- Ideal for new spa fills and routine water balancing
- Easy to measure and apply
- Convenient 1.83 lb container for multiple treatments
Size: 1.83 lbs
Dosage Amounts:
- Example; Add 3 ounces of this product in a 400 gallon spa to raise the calcium hardness by 40 ppm.
- Read entire label before using. Complete dosage chart can be found on the bottle.
