Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)
Key features
- •Increases low Total Hardness levels in swimming pool water
- •Prevents corrosion, etching, and staining
- •Prevents pool surface damage
- •Ideal for plaster pools and soft water areas
- •For best results, use with the Clorox Pool app
- •Power Source Type: Manual
Clorox® Pool&Spa™ Swimming Pool Calcium Hardness Increaser, Prevents Corrosion, Etching and Staining, 4LB (Pack of 1)
List Price: $16.96$15.26DEALYou Save: $1.70 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (10)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.7
out of 5
Based on 10 reviews
5★
80%
4★
20%
3★
0%
2★
0%
1★
0%
You can't hot tub without it!
Tim Metz✓ Verified Purchase•January 6, 2024
I couldn't find this at the local Walmart recently, so I ordered it online. I would have preferred it in a plastic canister with a screwtop lid. It does what it's supposed to do.
Good
james✓ Verified Purchase•December 18, 2023
Expensive, but cheaper than the pool store.
As expected
Amazon Customer✓ Verified Purchase•November 20, 2023
As expected
Works well in hot Tubs
Karen L✓ Verified Purchase•October 25, 2023
Works well for hot Tubs, just need to do some calculations
Excellent value for a good product
Ben W.✓ Verified Purchase•October 20, 2023
Not sure why I'm being asked to evaluate "softness." The value is excellent--certainly compared to pool stores and big box stores such as Home Depot and Lowes. It is easy to pour and dissolves readily in water. Will certainly buy again if needed.
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