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You are here: Home > Chemicals & Maintenance > Water Balancing
ThermoSpas easy to use test strips and specially formulated products make keeping your water safe and crystal clear effortless. Always be sure to correct your alkalinity first and then the pH level. Your pH should be kept between 7.2 7.8 and the ideal alkalinity level is between 80-120 ppm and calcium hardness should stay within 200 400 ppm.

Simple Conversion Table:
3 Teaspoons = 1 Tablespoon = 0.5 ounce
(The cap on our Spa Activator is equal to 1.5 ounces or 3 Tablespoons)
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Raising Ph/Alkalinity Lowering Ph/Alkalinity
Price $10.99
Price $11.99
Ph/Alkalinity Up 2 Lb Ph/Alkalinity Down 3 Lb
Simplify the balancing of your water while extending the life of your spa equipment. To lower alkalinity without lowering the pH level run the spa on high speed and add one ounce for every 10 ppm in a 500 gallon spa in just one area of the spa. When lowering alkalinity add as much at one time as necessary.
Stain and Scale Natural & Clear - Green Technology
Price $14.99
Price $11.99
Stain and Scale 1 Qt Natural and Clear 1 Qt
With low mineral content add 2 ounces per/100 gallons on initial fill and 1 ounce per/100 gallons weekly. Natural & Clear is a natural enzyme that breaks down the organics and contaminants in the water, purifying the water, helping to prevent oil slicks and common water scum lines.
Spa Foam Away Liquid Calcium
Price $14.99
Price $8.99
Spa Foam Away 1 Qt Liquid Calcium 1Qt
Foaming in your water has a variety of causes. Though it is not harmful to you or your spa it does minimize the effectiveness of your sanitizer. In a 300 gallon spa Liquid Calcium raises the calcium level 15 ppm per/ounce.
Protection Plus TruTest Digital Tester
Price $17.99
Price $59.99
Protection Plus 1Qt TruTest Digital Tester
With low mineral content add 1 ounce per/100 gallons on initial fill and .5 ounce per/100 gallons weekly.  With high mineral content add 3 ounces per/100 gallons on initial fill and 1.5 ounces per/100 gallons weekly The combination of test strips and digital technology provides simple and accurate readings of sanitizer (both chlorine and bromine), pH, and total alkalinity.
TruTest Digital Strips AquaChek 6-in-1 Test Strips
Price $9.99
Price $8.99
TruTest Digital Strips
50 test strips to get accurate readings of sanitizer (both chlorine and bromine), pH, and total alkalinity. The simplest and most economical spa and pool test strips on the market.
pHin Smart Water Care Monitor and App
Price $299.00
pHin Smart Water Care Monitor and App

pHin is reinventing hot tub care with a WiFi-enabled smart monitor and a mobile phone app to take away the guesswork. Its the perfect addition to your ThermoSpas hot tub and as easy as Monitor, Notify, Add!