Regal 20 lbs Calcium Increaser Pail
Product Overview
A proven choice for protecting pool surfaces and equipment from the corrosive effects of soft water.
This Regal 20 lb pail contains 100.0% Calcium Chloride, the standard specification for raising calcium hardness in residential and commercial pools. In our experience, maintaining proper hardness with this 20 LBS granular treatment is essential for preventing etching in plaster and corrosion in plumbing. Unlike lower-grade balancers, this fast-dissolving formula reliably handles water balance without adding unwanted metals or stabilizers.
Customer Reviews
No reviews yet — bought this one? You'd be first.
Benefits & What Makes It Different
100.0% Calcium Chloride
This high-purity granular formula dissolves quickly to increase calcium hardness without leaving residue or affecting other chemical levels.
Surface Protection
Maintaining proper hardness prevents aggressive water from leaching calcium out of plaster, which causes permanent etching and staining.
Equipment Longevity
Balanced calcium levels protect heat exchangers and metal plumbing components from the corrosive damage often seen in low-hardness environments.
Product Details
Calcium Chloride 100.0%
1.25 lb per 10,000 gallons to raise hardness by 10 ppm
Compatibility
- Do not mix directly with other chemicals
- Add only into water
- Safe for all pool finishes including plaster, vinyl, and fiberglass
When To Use This
Pro Tip
In regions with naturally soft water, like the Pacific Northwest, check your hardness levels monthly, as rain and snowmelt can dilute your calcium concentration faster than you might expect.
Common Questions & Instructions
How much Regal Calcium Increaser do I need for my pool?
For most pools, 1.25 lb of this product will raise the calcium hardness by 10 ppm in 10,000 gallons of water; always test your levels before application.
Can I swim immediately after adding calcium increaser?
We recommend waiting at least 2 to 4 hours for the product to fully circulate and dissolve before swimming to ensure the water is properly balanced.
Does this product affect my pool's pH or alkalinity?
While primarily designed to raise hardness, adding large amounts of Calcium Chloride can slightly impact pH, so it is best to re-test your total alkalinity and pH after the calcium has stabilized.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
