DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
💦 Elevate your spa game—because soft water shouldn’t mean soft surfaces!
SpaPure Calcium Hardness Increaser 16oz is a granular formula designed to safely boost calcium levels in all spa and hot tub waters. It prevents corrosion of spa surfaces and is compatible with all major sanitizer systems including bromine, chlorine, mineral sanitizers, and biguanide. Trusted by thousands with a 4.7-star rating, it ensures your spa stays crystal clear and protected.
| ASIN | B0045W037Y |
| Best Sellers Rank | #21,107 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #64 in Swimming Pool Balancers |
| Brand | SpaPure |
| Customer Reviews | 4.7 4.7 out of 5 stars (652) |
| Is Discontinued By Manufacturer | No |
| Item Form | Granular |
| Item Weight | 1 pounds |
| Item model number | SPA2729CS20B6 |
| Manufacturer | Haviland |
| Number of Items | 1 |
| Package Dimensions | 10.28 x 2.44 x 2.4 inches |
| Product Benefits | Corrosion |
| UPC | 025551710581 025551721402 |
| Unit Count | 16.0 Ounce |
M**H
Works as described.
Works good in an 8 x 8 spa. I didn't realize my water was actually too soft for a spa, but this does the trick.
A**S
Good product
Great amount for the price.
A**K
Increases Water Hardness.
Increases hardness of water. I should probably buy a bigger size container or stock up on these. I probably needed 2/3 of the container to get the water where I wanted it for my tub. But it does what it is supposed to.
P**G
Easy to use for small pool or spa
Not large enough bottle for use in larger pools or swim spas
A**R
Just calcium chloride
Needed some salt as I used reclaimed rain water for my spa. Just calcium chloride, works great. They maybe cheaper ways to buy calcium chloride
J**B
Exactly what I odered
This was the second bottle of this product I bought. Just what I wanted and delivered fast.
W**R
Spa chemicals
Great product and great price
B**1
Product exactly as advertised
The packaging was good, and arrived ontime and undamaged. I have used this before, so I am sure it will work well.
Trustpilot
2 days ago
3 weeks ago