Recommended Products

Quality test kits and chemicals to keep your hot tub water crystal clear

As an Amazon Associate, I earn from qualifying purchases. This helps support the development of TubTest.

Test Kits

pH & Alkalinity

SpaGuard Alkalinity Increaser

SpaGuard's Alkalinity Increaser provides spa owners with a quick-dissolving granular formula to raise low alkalinity levels, preventing costly damage to spa plumbing, fixtures, and surfaces while providing more comfortable water.

View on Amazon

SpaGuard pH Increaser

SpaGuard pH Increaser is a dry, granular product that gradually raises your pH level for balanced, comfortable water.

View on Amazon

AquaDoc pH Decreaser

AquaDoc's spa pH reducer helps you maintain the balance of your hot tub's chemistry. If your spa's pH is outside its range, use this pH decreaser to help reduce cloudy water and scale build-up.

View on Amazon

Sanitizers

SpaGuard Brominating Concentrate

A one-step contamination fighter. SpaGuard Brominating Concentrate provides effective sanitization for your spa water with the power of bromine.

View on Amazon

SpaGuard Chlorinating Concentrate

SpaGuard's Chlorinating Concentrate provides spa owners with the sanitizing power of chlorine in a quick-dissolving granular form, making application quick and easy.

View on Amazon

Shock Treatments

SpaGuard Enhanced Shock

SpaGuard Enhanced Shock 6lb with bonus measuring cup. Powerful oxidizer to keep your spa water clean, clear, and free of organic contaminants.

View on Amazon