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Just a simple check with the marked portions with easy to read points to see if the water is too cold, too hot, or just right. With a standard range of 0 to 140 °F You will always know what your pool or Hot Tub temperature is, and with the built in sampling cup on the front of the unit, you can easily check PH levels too.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.