ProTeam® Spa Calcium Up | Calcium Hardness Increaser for Hot Tubs & Swim Spas

ProTeam Spa Calcium Up is a concentrated calcium hardness increaser designed to raise low calcium levels in swim spa and hot tub water. Proper calcium hardness is essential for preventing corrosive water conditions that can damage spa surfaces, plumbing, and equipment. When calcium levels are too low—common with softened or naturally soft water—water becomes aggressive and can etch delicate surfaces.

This fast‑dissolving formula uses soluble calcium flakes that disperse quickly when added to circulating water. Maintaining calcium hardness within the recommended range helps extend the life of spa equipment, reduces foaming, and provides more comfortable water for bathers. ProTeam Spa Calcium Up is compatible with all sanitizers and oxidizing systems, making it easy to integrate into any spa water care program.

Key Features & Benefits

1. Raises low calcium hardness levels in swim spas and hot tubs
2. Helps prevent corrosion of spa surfaces, plumbing, and equipment
3. Reduces foaming and eliminates etching of delicate surfaces
4. Fast‑dissolving, concentrated calcium flakes
5. Compatible with all sanitizer and oxidizer systems
6. Ideal for spas filled with softened or low‑hardness water

Application Apply to the spa while water is circulating. Follow label directions for proper dosage amount.

Available Size

1. 1 lb bottle