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David D. Great product - works as advertised!!
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Cathy E. I've been using this for years and it works great. Replace water in hot tub every 3 months, and put this in with each replacement cycle.
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William J. In my application with well water with a high calcium content this product works well to help balance the water chemistry.
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Claudia S. Just recently cleaned and re-filled my spa. Added the product and after a few weeks the pH is at the perfect level. Will be keeping an eye on the pH level in my spa to see if it continues to stay where it should be, but so far, so good! *Sweepstakes*
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PopG I used this on previous water change and bought another one. I recommend it.
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