Keep water clear and trouble-free. The AquaChek® 4-in-1 + ShockChek™ kit quickly checks the essentials for chlorine pools and spas and tells you when it’s time to shock—helping you prevent cloudy water and algae before they start.

What it measures

• Free Chlorine

• Total Chlorine

• pH

• Total Alkalinity

• Stabilizer (Cyanuric Acid)

• ShockChek™ advisory: prompts you when a shock is needed

Why it’s great

• Fast, easy testing for balanced, comfortable water

• Shock guidance removes guesswork and saves time/chemicals

• Helps protect equipment and finishes by maintaining proper balance