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Your cart is empty.The HTH pH Down helps balance the pH in your pool water for healthy swimming. If pH in your pool water measures above 7.8, add HTH pH Down directly to the surface to prevent corrosion of pool surfaces, and prevent skin and eye irritation. HTH pH Down is great for all pool types including vinyl-lined pools and saltwater systems. About the Brand: HTH was developed for consumers with economical and powerful products for the toughest jobs. HTH and its sister brands offer everything you need for your pool, from algaecides and deposit control formulas to non-chlorine shock treatments, powerful surface cleaners, and more. If you like HTH, check out some of the other similar brands from our parent company, Sigura, like Applied Biochemists, Leisure Time, GLB, Spa Selections, and PooLife. Sigura has a long heritage of developing innovative water treatment solutions for use in pools, lakes, ponds, hot tubs, and more. At Sigura, we have an unparalleled commitment to delivering superior water treatments that improve the environment and enhance the security, health, and safety of our global communities. With our innovation and simple, intuitive solutions that anticipate needs, Sigura customers feel more secure as they enjoy their pools, spas, ponds, and lakes.
Edward D. Zimmerman
Reviewed in the United States on August 10, 2024
Used this for years for opening my pool has always lowered the PH into range.
SYR
Reviewed in the United States on June 5, 2024
It does what it's suppose to do. It lowers the PH of the pool water. The PH of my pool was over 8.4 and our pool capacity is about 15,000 gallons so I had to use half of the container. After 4 hours the PH was down to an acceptable amount. Unfortunately, the nonstop rain in Texas is reeking havoc on my pool water chemistry so I will be needing more of this soon.
Kindle Customer
Reviewed in the United States on August 9, 2023
Ordered several times ! It works - water crystal clear!
Rob
Reviewed in the United States on August 19, 2023
As expected
Quin
Reviewed in the United States on December 21, 2023
I had to buy this on Amazon because our local pool supply stores don't carry it. I think the HTH chemicals are great compared to other brands. We have tried many at lower prices but always come back to this HTH brand.
CHRISTY PARTON
Reviewed in the United States on July 25, 2022
I got a great value for a great price. The instructions were so easy to follow.
Stephanie D.
Reviewed in the United States on July 16, 2022
Never brought the ph level down in my pool and I followed instructions to a "T". I have an above ground 27'x54" pool. I did all the math, researched online and filed instructions on the bag. Didn't work.
Linda Cozzolino
Reviewed in the United States on August 23, 2021
Works great, easy to follow instructions, perfect size bag for a small pool
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