Top 10 Pool Chemicals and Supplies Calcium Hardness – Swimming Pool Balancers

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1. Rx Clear


Rx Clear Calcium Plus | Granular Calcium Chloride | Raises Calcium in Swimming Pool Water | Hardness Increaser for Swimming Pools | Helps Prevent Corrosion | 25 Lbs

Rx Clear #ad - Be aware - do not add this product on the same day that either ph plus or alkalinity increaser has been added to the pool water. Water chemistry - one of the most important aspects of proper swimming pool care involves the maintenance of balanced water chemistry.

Also prevents etching, and delamination of concrete, pitting, shotcrete, ladders, railings, pool heater components, and fiberglass pools. Per 10, 000 gallons will raise the hardness level approximately 50 ppm. Calcium plus - use rx clear swimming pool calcium booster when the calcium hardness reading in your pool drops below 150ppm. When swimming pool chemicals are not at their ideal levels, swimmers can be at risk of contracting illnesses and suffering from skin irritation, and pool or spa equipment, hoses, the water can turn dull and cloudy, and surfaces can become damaged.

The minimum calcium hardness level is 150 ppm. Six lbs. Do not pre dissolve this product. Raising calcium hardness helps prevent corrosion of metal and plaster surfaces. Also helps prevent foaming of certain chemicals. Add when water hardness levels drop below 150 ppm. Prevents corrosion - rx clear calcium plus helps stop corrosion of metal surfaces such as light fixtures, screws, plaster, gunite, pool cover components, and metals in your pump or filter.
BrandRx Clear #ad
ManufacturerRx Clear #ad
Weight25 Pounds

2. Baquacil


Baquacil 84367 Calcium Hardness Increaser Swimming Pool Balancer, 3.5 lbs

Baquacil #ad - Benefits: raises spa water to the recommended level of calcium hardness to prevent corrosion. Compatibility: Works with chlorine and bromine sanitized pools. Includes: one 3. 5-lb container of Baquacil Calcium Hardness Increaser. Features: Chlorine free; Concentrated formula. Use: 1 lb per 10, 000 gallons to raise calcium hardness by 10 ppm; Maintain levels between 180-250 ppm for vinyl pools and 200-275 ppm for plaster pools.
BrandBaquacil #ad
ManufacturerInnovative Water Care #ad
Height4.95 Inches
Length5.68 Inches
Weight3.5 Pounds
Width5.68 Inches
Part Number84367

3. HTH


8, hth 67052 Calcium Hardness Up Pre-Measured Water Soluble Pool Chemical Pods

HTH #ad - Easy-to-use & water-soluble swimming pool pods. Each package contains 8 Pods with 8-ounces of chemicals Each. Each pod contains a pre-measured amount of pool chemicals. Compatible with salt water systems. Prevents corrosion of pool surfaces.
BrandHTH #ad
ManufacturerLonza #ad
Height12.25 Inches
Length3 Inches
Weight4.3 Pounds
Width9.5 Inches
Part Number67052

4. Pool Mate


Pool Mate 1-2825 Calcium Increaser for Swimming Pools, 25-Pound

Pool Mate #ad - Low calcium hardness level can cause corrosive water. Ideal calcium hardness range 200 - 400ppm. Prevents the staining or etching of your pool's surface. Increases Water Hardness.
BrandPool Mate #ad
ManufacturerRobelle Industries #ad
Height11 Inches
Length10.25 Inches
Weight25 Pounds
Width10.25 Inches
Part Number1-2825

5. Clorox


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

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

6. Doheny's


Doheny's Calcium Plus 25 lb.

Doheny's #ad - Ideal calcium levels in plaster pools Is 225-300 ppm, All Others 175-225 ppm. Contains Calcium Chloride. Perfect pool water includes the Proper Calcium Hardness Levels! Helps increase effectiveness Of Your Other Pool Chemicals. Helps reduce Equipment Corrosion & Staining.
BrandDoheny's #ad
ManufacturerDoheny's #ad

7. Puri Tech


Puri Tech Pool Chemicals 10 lb Calcium Hardness Increaser Plus for Swimming Pools & Spas Increases Calcium Hardness Levels Prevents Staining on Surfaces

Puri Tech #ad - 5, 50 lbs/200ppm. Dosage: 2, 000 gallons: 3 lbs to increase hardness 50ppm, 12. 5 lbs/100ppm, 3 lbs/100ppm, 000 gallons: 6. 25 lbs to increase hardness 50ppm, 25 lbs/200ppm.

10, 6. 25 lbs/100ppm, 6. 25 lbs/200ppm. Balance calcium hardness level prevents foaming and surface erosion or scaling. 20, 000 gallons: 1. 5 lbs to increase hardness 50ppm, 25 Lbs/100ppm, 000 Gallons: 105 lbs to increase hardness 50ppm, 12. 5 lbs/200ppm. Calcium hardness increaser for pool and spa available in resealable bags for easy storage. Calcium hardness increaser active ingredients: Calcium Chloride. Raises calcium hardness increaser for pool and spas. Puri tech pool calcium increaser fast acting formula.
BrandPuri Tech #ad
ManufacturerPuri Tech #ad
Weight10 Pounds
Part NumberPCC



Leisure Pool 25 lb. Calcium Hardness Increaser Calcium Chloride

LEISURE POOL & SPA SUPPLY INC. LP #ad - Per 10, 000 gallons will raise CH levels by 10 ppm. Ships in a 25 lb. Pail with resealable lid for easy storage. 83-87% pure calcium chloride, meets atsM 098 AASHTO M144 Standards. Other uses: ice melt, dust control, concrete acceLERATOR. 25 lb. Pail of calcium chloride dry granules commonly known as Calcium Hardness Increaser, will raise calcium hardness levels in commercial and residential swimming pools and spas. Dosing instructions: 1. 1 lb.
ManufacturerLeisure Pool & Spa Supply, Inc. #ad
Height14 Inches
Length12 Inches
Weight25 Pounds
Width12 Inches

9. Pool Mate


Pool Mate 1-5220B 20 Pounds Swimming Pool Alkalinity Increaser, 20-Pounds

Pool Mate #ad - Ideal total alkalinity range 80 - 120ppm. Prevents equipment corrosion, plaster damage. Raises Total Alkalinity. Prevents eye irritation.
BrandPool Mate #ad
ManufacturerPool Mate #ad
Height10 Inches
Length10 Inches
Weight20 Pounds
Width10 Inches
Part Number1-2256B-02



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

LEISURE TIME #ad - Includes: one 32-oz bottle of Leisure Time Calcium Booster. Prevents corrosion. One ounce increases hardness 7 ppm in 500 gallons of water. Use: one ounce increases hardness 7 ppm in 500 gallons of water. Compatibility: Compatible with chlorine, bromine, ozone, 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.
ManufacturerLeisure Time #ad
Height9.5 Inches
Length3.12 Inches
Weight2.58 Pounds
Width3.12 Inches
Part NumberCB