LifeLine Calcium Hardness Increaser 15lb testing Dual-duty dynamo

Dual-duty dynamo

fun restored—dive into drama-free dips

They’re perfect for developing confidence in the water and letting kids invent their own games underwater

Comfortable supported seat and smooth leg openings allow easy movement during play

its surfactant sneaks into cracks and crevices where algae hides

LifeLine Calcium Hardness Increaser 15lb testing Dual-duty dynamoLifeLine Calcium Hardness Increaser 15lb LifeLine Calcium Hardness Increaser 15lb is a granular calcium chloride product used to raise calcium hardness in pool water, helping prevent corrosion, etching, and other damage caused by soft or underbalanced water. By keeping hardness in the recommended range (commonly about 200400 ppm, minimum around 150 ppm), it supports longterm protection of plaster, vinyl, and equipment while improving overall water