CALCIUM HARDNESS INCREASER 4LB- LIFELINE 8 Provides cushioned head and neck

Provides cushioned head and neck support to keep every soak more relaxing and ergonomic

Simple drop-in replacement design gets your spa back to peak performance quickly

Twin tempered glass lenses (shatter-resistant)

Its extra-long design lets you stretch out as a floating lounger

helping prevent pH swings and ensuring a clean

CALCIUM HARDNESS INCREASER 4LB- LIFELINE 8 Provides cushioned head and neckLifeLine Calcium Hardness Increaser 4lb LifeLine Calcium Hardness Increaser 4lb is designed to raise the calcium hardness level in pool water to help prevent corrosion, etching, and surface damage on both plaster and vinyl pools. By maintaining proper calcium levels, it supports overall water balance and helps protect heaters, pumps, and other metal components from aggressive, underbalanced water. Key features & benefits Protects pool surfaces by