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1. SpaGuard

#ad

SpaGuard Spa Calcium Hardness Increaser, 12 Ounce

#adSpaGuard #ad - Prevents corrosion of equipment due to low calcium hardness. Per 100 gallons raises calcium hardness 25ppm. Prevents etching of plaster due to low calcium hardness. 1 tbs.

Brand	SpaGuard #ad
Manufacturer	SpaGuard #ad
Weight	0.75 Pounds
Part Number	42257BIO
Model	BIO42257
Warranty	Returns are not accepted on opened or used items and are subject to a 20% restocking fee.

2. LEISURE TIME

#ad

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

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

Brand	LEISURE TIME #ad
Manufacturer	Leisure Time #ad
Height	9.5 Inches
Length	3.12 Inches
Weight	2.58 Pounds
Width	3.12 Inches
Part Number	CB
Model	CB

3. Clorox

#ad

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

#adClorox #ad - Ideal for plaster pools and soft water areas. Power source Type: Manual. Increases low Total Hardness levels in swimming pool water. For best results, use with the Clorox Pool app. Prevents corrosion, etching, and staining. Prevents pool surface damage.

Brand	Clorox #ad
Manufacturer	Clorox® Pool&Spa™ #ad
Height	11.5 Inches
Length	4.4 Inches
Weight	4 Pounds
Width	10 Inches
Part Number	12204CLX
Model	12204CLX

4. Spa Essentials

#ad

12-Ounce, Spa Essentials 32534000 Calcium Hardness Increaser Granules for Spas and Hot Tubs

#adSpa Essentials #ad - Helps prevent corrosion Of Spa Equipment And Surfaces. Easy to Use. Increases calcium Hardness Level In Spa Water. No assembly Required.

Brand	Spa Essentials #ad
Manufacturer	Robelle Industries #ad
Height	8 Inches
Length	3 Inches
Weight	0.75 Pounds
Width	3 Inches
Part Number	32534000
Model	32534000
Warranty	Returns are not accepted on opened or used products and are subject to a 20% restocking fee

5. Baqua Spa

#ad

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

#adBaqua Spa #ad - Compatibility: Works with all biguanide sanitizer systems. Includes: one 14-oz container of BAQUA Spa Calcium Hardness Increaser. Benefits: raises spa water to the recommended level of calcium hardness. Features: Bromine and chlorine free. Use: part of baqua spa's bromine-free and chlorine-free maintenance product line.

Brand	Baqua Spa #ad
Manufacturer	Innovative Water Care #ad
Height	2.44 Inches
Length	2.44 Inches
Weight	1 Pounds
Width	6.2 Inches
Part Number	88825
Model	88825

6. Hot Tub Things

#ad

Prevent Corrosion in Your Spa, Hot Tub Things Calcium Increaser 32 Ounce

#adHot Tub Things #ad - America's #1 trusted Brand of Hot Tub Chemicals. Add a little calcium increaser regularly to protect your hot tub from corrosion caused by low calcium. Compare to Leisure Time Calcium Booster. Formulated exclusively for Hot Tubs And Made from the Purest Chemicals Available. Safety tested to Assure Quality, Guaranteed Performance.

Brand	Hot Tub Things #ad
Manufacturer	Hot Tub Things #ad
Height	9 Inches
Length	3 Inches
Weight	2.1 Pounds
Width	3 Inches
Part Number	850511004222

7. PureSpa

#ad

SpaPure Calcium Hardness Increaser 16oz

#adPureSpa #ad - Ensure water won't become corrosive. Fast acting liquid calcium hardness balancer. Protect your spa equipment and bather comfort.

Brand	PureSpa #ad
Manufacturer	Haviland #ad
Part Number	SPA2729CS20B6

8. SpaChoice

#ad

14-Ounces, SpaChoice 472-3-5031 Increase Calcium for Spas and Hot Tubs

#adSpaChoice #ad - Increases calcium Hardness in Spa Water. Downloadable user guide Available Under Product Information: Technical Specifications. The ideal hardness level is 200-400 ppm. Per 500 gallons to increase hardness by 10 ppm. Use a test kit or test strip to test your spa calcium levels. Use 1 oz. Low hardness will etch plaster and corrode spa equipment.

Brand	SpaChoice #ad
Manufacturer	Robelle Industries #ad
Height	10 Inches
Length	6 Inches
Width	3 Inches
Part Number	472-3-5031
Model	472-3-5031

9. Natural Chemistry

#ad

Natural Chemistry Spa Calcium Hardness Increaser 1.83 lb 2 Pack

#adNatural Chemistry #ad - Boosts the calcium hardness level in your spa or hot tub. Reduces eye and skin irritation. Prevents corrosion damage to spa surfaces, plumbing, and other equipment. 2 pack.

Brand	Natural Chemistry #ad
Manufacturer	Natural Chemistry #ad