St. Cyr Spa Calcium Increaser 2lb. (No Returns on Chemicals) St. Cyr Spa Calcium Increaser is formulated to raise the calcium hardness of your hot tub water, helping prevent foaming, reducing equipment corrosion, and extending the lifespan of spa components. The 2lb bottle contains pure calcium chloride chips and is ideal for spas where water hardness may be too low for optimal system performance. Key Features & Benefits Raises Calcium Hardness: Increases water hardness to the recommended range, supporting clear, balanced water and protecting spa equipment. Protects Components: Reduces the risk of foam and prevents premature damage to heaters and other sensitive parts. Easy Application: Calcium chloride chip formula dissolves effectively for precise dosing. Long-Term Value: Supports longer life for heating elements, pumps, and other immersed hardware by reducing the risk of corrosive soft water. Specifications Product Type: Calcium hardness increaser for spa/hot tub Active Ingredient: Calcium chloride chips Net Weight: 2 lbs Recommended Usage: Add slowly—no more than 4 oz at a time, even less is better. Always refer to product label for exact dosing. Manufacturer: St. Cyr Pool & Spa Tip: Test water before and after application to achieve desired hardness. Disperse slowly with the circulation system on for even mixing
