Top 8 Hot Tub Calcium Hardness Decreaser – Swimming Pool Balancers

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32 fl oz, Leisure Time CB Calcium Booster Balancer for Spas and Hot Tubs

LEISURE TIME #ad - Prevents corrosion. Use: one ounce increases hardness 7 ppm in 500 gallons of water. Includes: one 32-oz bottle of Leisure Time Calcium Booster. Compatibility: Compatible with chlorine, ozone, bromine, and biguanide sanitizers. Benefits: raises water hardness to maintain a level of hardness between 150-400 ppm. Features: prevents corrosion and foam; Part of Leisure Time's Simple Spa Care program. Compatible with chlorine, bromine, ozone and biguanide sanitizers. One ounce increases hardness 7 ppm in 500 gallons of water.
ManufacturerLeisure Time #ad
Height9.5 Inches
Length3.12 Inches
Weight2.58 Pounds
Width3.12 Inches
Part NumberCB



LEISURE TIME Calcium Booster Balancer Spa and Hot Tub Water Hardness and Foam Preventive Care, 32 Fluid Ounce Bottle 2 Pack

LEISURE TIME #ad - Prevents foam and hard water: Aids in preventing foam and corrosion of equipment. Calcium booster: Boosts calcium in spa and hot tub water. Proper levels: proper water hardness level should be between 150-400 ppm. Easy-to-use: easy-to-use, 1-ounce increases hardness 7 ppm in 500 gallons of water. Compatible with: Compatible with chlorine, bromine, ozone, and biguanide sanitizer systems.
ManufacturerLeisure Time #ad
Height0 Inches
Length0 Inches
Weight52 Pounds
Width0 Inches
Part Number2xCB

3. SpaGuard


SpaGuard Spa Calcium Hardness Increaser 12 oz 3 Pack

SpaGuard #ad - Prevents corrosion of equipment and etching of plaster due to low calcium levels. Spaguard calcium hardness Increaser 12oz - 3 Pack. Granula Calcium Chloride.
BrandSpaGuard #ad
ManufacturerSpaGuard #ad
Weight2.5 Pounds
Part Number42258BIOx3

4. Baqua Spa


Baqua Spa 88825 Calcium Hardness Increaser Spa and Hot Tub Balancer, 14 oz

Baqua Spa #ad - Compatibility: Works with all biguanide sanitizer systems. Benefits: raises spa water to the recommended level of calcium hardness. Includes: one 14-oz container of BAQUA Spa Calcium Hardness Increaser. Features: Bromine and chlorine free. Use: part of baqua spa's bromine-free and chlorine-free maintenance product line.
BrandBaqua Spa #ad
ManufacturerInnovative Water Care #ad
Height2.44 Inches
Length2.44 Inches
Weight0.88 Pounds
Width6.2 Inches
Part Number88825

5. Clorox


White, 4 lb, Clorox Pool&Spa 12204CLX Calcium Hardness Increaser

Clorox #ad - Prevents pool surface damage. Increases low Total Hardness levels in swimming pool water. Power source Type: Manual. Ideal for plaster pools and soft water areas. Prevents corrosion, etching, and staining. For best results, use with the Clorox Pool app.
BrandClorox #ad
ManufacturerClorox® Pool&Spa™ #ad
Height11.5 Inches
Length4.4 Inches
Weight4 Pounds
Width10 Inches
Part Number12204CLX



LEISURE TIME D-02 Gon Hot Tub Metal Remover, 2-Pack

LEISURE TIME #ad - Use once at fill or refill. Prevents stains caused by iron and other metals. Compatible with chlorine, bromine, ozone and biguanide sanitizers.
ManufacturerLeisure Time #ad
Height3 Inches
Length6 Inches
Weight1 Pounds
Width10 Inches
Part NumberD--02

7. SpaGuard


12 Ounce, SpaGuard Spa Calcium Hardness Increaser

SpaGuard #ad - Per 100 gallons raises calcium hardness 25ppm. Prevents etching of plaster due to low calcium hardness. 1 tbs. Prevents corrosion of equipment due to low calcium hardness.
BrandSpaGuard #ad
ManufacturerBioguard #ad
Weight0.75 Pounds
Part Number42257BIO
WarrantyReturns are not accepted on opened or used items and are subject to a 20% restocking fee.

8. LeisureQuip


Contains Scum Absorber, SpaGuard Total Alkalinity Increaser, Calcium Increaser, pH Decreaser, pH Increaser, Test Strips, Spa and Hot Tub Chemical Balancer Maintenance Kit

LeisureQuip #ad - Contains: leisurequip scum absorber, spaguard ph down 1lb, spaguard ph increaser 18oz, SpaGuard Calcium Increaser 12oz, SpaGuard Total Alkalinity Increaser 2lb, BioGuard Test Strips 5-way - 50 strips/btl.

Support: this kit from leisurequip includes a custom 9 point water analysis for YOUR water. Approved: spaguard spa water balancers provide the right balance for your spa, hot tub or pool, by preventing surface corrosion and equipment damage while balancing water for bather comfort. Scum absorber shape may vary ScumBoat or ScumBug. Follow up: a dedicated technician will provide you with personalized instruction and support to make sure you can relax with confidence and peace of mind.

Upon request, we will send you a sample bottle and a prepaid envelope by which you can mail us a sample. Effective: tested and proven SpaGuard products that are reliable and take the hassle out of your spa or hot tub care.
BrandLeisureQuip #ad
ManufacturerLeisureQuip #ad
Height6.5 Inches
Length10.28 Inches
Width6.73 Inches
Part NumberBundle120