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Ahh!Some Water Care Hardness Control, 1 lb Calcium Booster for Hot Tubs & Spas, Prevents Corrosion, Itching, and Staining, Easy to Use Water Hardener, Calcium Water Hardener Spa & Hot Tub Chemicals

4.8 (8) Write Review
Free shipping on orders over $29.99

$10.95

$ 4 .99 $4.99

In Stock

About this item

  • Essential Calcium Hardness Increaser: Ahh-Some Hardness Control boosts calcium levels in your hot tub or spa, ensuring optimal water hardness and balance.
  • Prevents Equipment Damage: Helps prevent corrosion of spa equipment and surfaces, as well as etching and staining caused by low calcium hardness.
  • Easy Application: Simply add the recommended amount to your water, run the filter, and allow the product to dissolve for quick and effective results.
  • Precise Dosage: Our 1 lb bottle provides accurate dosing instructions, with 1 ounce increasing hardness by approximately 10 ppm per 500 gallons.
  • Made in the USA: Produced with high-quality standards in the USA, ensuring reliable performance and safety for your spa and hot tub maintenance.


Maintain perfect water balance with Ahh-Some Water Care Hardness Control. Our 1 lb Calcium Hardness Increaser is essential for keeping your hot tub or spa's calcium levels in check. Proper hardness prevents corrosion of equipment, etching of surfaces, and staining of spa interiors, ensuring longevity and pristine condition of your spa. Easy to use, simply add the product as directed, run your filter, and see immediate results in balancing your water. Each ounce increases water hardness by about 10 ppm per 500 gallons, making it straightforward to achieve the ideal calcium level. Proudly made in the USA, our Hardness Control provides dependable quality for your spa maintenance needs. Enjoy balanced, clean, and comfortable water with minimal effort.


dandm
Reviewed in the United States on March 27, 2025
Works well. Got our hot tub back on par.
Mark E Holman
Reviewed in the United States on March 23, 2025
Works great!
mike rudy
Reviewed in the United States on February 25, 2025
The price was astounding, quick delivery, worked great for my Hot Tub.
Keith D.
Reviewed in the United States on December 4, 2024
As new hot tub owners, we were still figuring out the right supplies to maintain it properly. After testing the water, we found the hardness levels were low, so we gave this product a try. It worked surprisingly fast to bring the levels back to where they needed to be.I’m no expert on water chemistry, but based on my experience, this product did exactly what it was supposed to. It was easy to use and made adjusting the water hardness straightforward. If you’re just starting out with hot tub maintenance, this could be a helpful addition to your toolkit!
Jodie
Reviewed in the United States on December 23, 2024
We are always having to boost the calcium in our hot tub water and this product worked really well. I felt like the calcium levels went up with less product used than a previous brand I have used. Easy to dispense and no issues with irritation after using it in the water.
asl
Reviewed in the United States on December 18, 2024
I needed to increase the hardness in my hot tub as it was at zero. This did what it's supposed to.
Axelrod
Reviewed in the United States on December 18, 2024
I got this water hardness control for my hot tub and I must say this product is incredibly effective and prevents the water from corrosion and maintains a clean environment.
Alex
Reviewed in the United States on December 12, 2024
Water testing for my hot tub showed that the hardness was low. I used this product per the directions and it brought the hardness back into specification. The product is selling for $10.95USD as of this review and I consider that to be a good price. My hot tub is small and this size product will likely last me for at least a year.