Home > Water Care > Sanitizers & Purifiers > Chlorine
Chlorine is the best sanitizer that you can use to keep your hot tub clean and clear.  Not only is it effective at treating water, it also will not stain your hot tub and will reduce the stress put on your plumbing.  At Thermospas, you can choose from a variety of chlorine package options.  For example, you can purchase a six month package if you like or you can simply purchase one 2 pound package of chlorine.  With a variety of options, you can easily select the one that is right for you.  Don’t forget to add the chlorine test strips, which will help you make certain you have just the right amount of chlorine added to your water.
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Chlorine Test Strips (50pk) Chlorine Test Strips (50Pk)

Dip a Chlorine Test Strip into your water and in 15 seconds you will be reading the Chlorine, pH and Total Alkalinity levels in your spa.

Price $13.99
Chlorinating Granules Chlorinating Granules

ClearRay® Chlorinating Granules is a sanitizer specially formulated for fast action. These highly soluble granules immediately dissolve upon application, providing quick and effective sanitizing to your spa or swim spa.

Price $26.99
Chlorinating Granules (3 Pack) Chlorinating Granules (3 Pack)

Chlorinating Granules is a sanitizer specially formulated for fast action. These highly soluble granules immediately dissolve upon application, providing quick and effective sanitizing to your spa or swim spa.

Price $71.99