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Your cart is empty.Clorox Spa® Alkalinity Increaser raises your alkalinity to regulate pH, which protects your equipment and surfaces. Optimize chlorine effectiveness which reduces overall spa maintenance improving spa users' comfort by preventing eye and skin irritation. The granulated formula dissolves fast and is easy to apply. To apply, broadcast while the spa is not in use and the pump is running.
Collin
July 21, 2025
Keeps my hot tub water perfectly balanced.
needavette
June 29, 2025
Works great
Linda J Wiersema
May 6, 2025
Great product with the convenience of home delivery, you can’t ask for more.
Gina
March 22, 2025
I prefer to use big name brands around the home especially with big equipment like the pool. The instructions and ingredients are clear and easy to understand on the container. We tried it with my sister's pool, it worked just as we expected.This gets four stars for meeting expectations, for me five stars is something that exceeds my expectations, this meets my expectations which is still very good. It is hard for a brand like Clorox to exceed expectations because they are already an established and reliable brand to me, please don't dismiss my rating. I simply have a set range for each rating.
Customer
March 21, 2025
perfect the hot tub
Matthew Jessup
March 17, 2025
Came well packaged and no issues with shipping. Quality and does what it needs for a great value.
Reviewer
February 15, 2025
Works as expected, good product as expected from Clorox.
DravensMommy11
November 14, 2024
Comparing it to my cheap Menards brand of Alkalinity Up; its hard to tell as it does its job though I think I used a bit less (I measure by the capful). It seemed to up the Alkalinity just like the off brand one; dissolved quick and did its job.
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