If the Calcium Hardness is extremely high or extremely low, it can have quite serious consequences with component damage, skin & eye irritation and scaling all common with an unbalanced hardness level. In this guide, we’ll overview the best 7 chemical products for increasing hardness:
1. Leisure Time CB Calcium Booster Balancer for Spas and Hot Tubs, 32 fl oz
Leisure Time Calcium Booster is formulated to raise the level of water hardness safely and effectively. The spa care chemical helps prevent foaming and corrosion of hot tub equipment to extend the life of your spa. Being compatible with all types of sanitizers, this pool care equipment will be sure to make sure you can continue to relax and relieve stress in your spa without stressing about how to care for your water.
FEATURES:
- Raises water hardness to maintain a level of hardness between 150-400 ppm
- One ounce increases hardness 7 ppm in 500 gallons of water
- Compatible with chlorine, bromine, ozone, and biguanide sanitizers
- Prevents corrosion and foam; Part of Leisure Time's Simple Spa Care program
- One 32-oz bottle of Leisure Time Calcium Booster
- Compatible with chlorine, bromine, ozone and biguanide sanitizers
- One ounce increases hardness 7 ppm in 500 gallons of water
- Prevents corrosion
2. SpaChoice 472-3-5031 Increase Calcium for Spas and Hot Tubs, 14-Ounces
Spa Choice Increase Calcium increases the calcium hardness in spas and hot tubs. The ideal calcium level for spas is between 200-400 parts per million. When calcium levels are too low, spa water can be foamy and corrosive to equipment. When calcium levels are too high, you will see scale formation on the spa's interior and the water will become cloudy. Use a test kit or test strip to test your spa calcium levels. This product is used to increase calcium hardness in spas and hot tubs in areas with low levels of hardness. Low hardness will etch plaster and corrode equipment. Before adding this product, test the water with a calcium hardness test kit or ask your local spa dealer. The ideal hardness level is 200-400 ppm (parts per million)
FEATURES:
- Increases Calcium Hardness in Spa Water
- Low hardness will etch plaster and corrode spa equipment
- The ideal hardness level is 200-400 ppm
- Use 1 oz. per 500 gallons to increase hardness by 10 ppm
- Use a test kit or test strip to test your spa calcium levels
3. BAQUA Spa 88825 Calcium Hardness Increaser Spa and Hot Tub Balancer, 14 oz
If you need to raise your spa water to the recommended level of calcium hardness, this Calcium Hardness Increaser from BAQUA Spa will get you back in the water in no time. As part of BAQUA Spa’s complete line of spa and hot tub maintenance products, this is an essential chemical addition to any pool care collection.
FEATURES:
- Raises spa water to the recommended level of calcium hardness
- Part of BAQUA Spa's bromine-free and chlorine-free maintenance product line
- Works with all biguanide sanitizer systems
- Bromine and chlorine free
- Includes one 14-oz container of BAQUA Spa Calcium Hardness Increaser
4. Spa Essentials 32534000-04 Calcium Hardness for Spas and Hot Tubs (4 Pack), 12 oz
Proper calcium hardness levels help prevent corrosion of equipment and etching of spa surfaces. Use Calcium Hardness Increaser to raise calcium hardness to the proper level. For areas with high calcium in the source water, use Stain & Scale Control to prevent formation of scale.
FEATURES:
- Increases Calcium Hardness Level In Spa Water
- Helps Prevent Corrosion Of Spa Equipment And Surfaces
- Easy To Use
- No Assembly Required
5. SpaGuard Spa Calcium Hardness Increaser
SpaGuard Calcium Hardness Increaser add 1tbs. per 100 gallons to increase your hot tub calcium hardness 25ppm. Prevents corrosion of equipment and etching of plaster due to low calcium hardness. Product Information: Granular calcium chloride 1 tablespoon per 100 gallons increases calcium hardness 25ppm Prevents corrosion of equipment due to low calcium hardness Prevents etching of plaster due to low calcium hardness
FEATURES:
- Prevents corrosion of equipment and etching of plaster due to low calcium levels
- Granula Calcium Chloride
6. Brilliance for Spas Calcium Hardness Increaser
The Brilliance For Spas Calcium Hardness Increaser is a quick dissolving balancer that is designed to fight the corrosion of your hot tub equipment. To maintain the balance in the calcium hardness levels of your spas water, the calcium levels need to be between 200-400 ppm.
FEATURES:
- Quick dissolving
- Increases calcium levels
- Corrosion prevention
7. Natural Chemistry Spa Calcium Hardness Increaser (1.83 lb)
Natural Chemistry Spa Calcium Hardness Increaser boosts the calcium hardness level in your spa or hot tub, which is an important factor in overall spa health. Low calcium hardness levels can cause corrosion damage to spa surfaces, plumbing, and other equipment that can cost considerable money to repair. It also can cause eye and skin irritation for bathers. Spa Calcium Hardness Increaser prevents these problems by steadily raising the hardness level into the optimal range of 150 to 250 ppm, protecting spa equipment and making its water clear and comfortable.
FEATURES:
- Boosts the calcium hardness level in your spa or hot tub
- Prevents corrosion damage to spa surfaces, plumbing, and other equipment
- Reduces eye and skin irritation
If you have any other questions about pool and spa products please do let us know - we are here to help!