Keep your pool or spa water crystal clear and perfectly balanced with the AquaChek® 4-in-1 + ShockChek™ Test Kit. Designed specifically for chlorine pools and spas, this easy-to-use test strip system checks the most critical water parameters—and lets you know exactly when it’s time to shock.

By combining essential water balance testing with built-in ShockChek™ guidance, this kit removes the guesswork from routine maintenance. You’ll prevent cloudy water, algae growth, and sanitizer problems before they start, while protecting pool surfaces and equipment from damage caused by unbalanced water.

What It Tests:

• Free Chlorine

• Total Chlorine

• pH

• Total Alkalinity

• Stabilizer (Cyanuric Acid)

• ShockChek™ Indicator – advises when shocking is required

Why Pool Owners Love It:

• Fast, accurate results in seconds

• ShockChek™ saves time and avoids over- or under-shocking

• Helps maintain clear, comfortable, swimmer-safe water

• Reduces chemical waste and unnecessary treatments

• Ideal for ongoing maintenance of chlorine pools and spas

PTL Direct Pro Tip:
Test your water twice per week during swim season and always test after heavy use or rain. Shocking only when ShockChek™ recommends it helps maintain chlorine efficiency and prevents that “chlorine smell” caused by combined chlorine.