Spa Calcium Hardness Increaser for Hot Tub Owners

Professional Grade is the brand that addresses your water balance headaches by providing you with the necessary spa chemicals to resolve your daily hot tub maintenance problems.

Our journey began after facing challenges with our own pool & hot tub upkeep for years, realizing the lack of quality chemicals available on the market. Through extensive testing, we introduced our range of professional-grade chemicals to assist in alleviating your hot tub-related concerns.

We take great joy in witnessing our community of happy hot tub users relishing their leisure time while soaking in the tub. Hot tubs have an incredible way of bringing friends, family, and loved ones together.

Weekends are the ideal time for hot tub relaxation!

Product Description Calcium Increaser Granules | Calcium Balancer

AquaDoc's Calcium Increaser Granules provide an easy solution to increasing calcium levels in your hot tub. Before beginning, always check your water levels to ensure the calcium hardness falls within the range of 180 - 260ppm. For saltwater spa systems, the recommended range is between 40ppm to 80ppm.

Add 1 ounce of AquaDoc's Calcium increaser granules for every 500 gallons of water to raise the hardness level by 10ppm. After setting your hardness level goal, add the product to the spa while the equipment is running. Allow the filter to run for 1 - 2 hours, wait 20 minutes, then re-test the water. It's advisable to start with a lower dose and measure before adding more.

AquaDoc's spa calcium booster and all other hot tub chemicals are proudly manufactured in the USA.

Customer Reviews - 356 ratings with 4.5 out of 5 stars - 144 ratings with 4.7 out of 5 stars - 1,297 ratings with 4.5 out of 5 stars

Price - Calcium Increaser Granules: $19.99 - Alkalinity Booster: $24.99 - Non Chlorine Shock: $29.99

Benefits - Increases calcium hardness of spa & hot tub water - Balances alkalinity and pH of spa & pool water - Quickly oxidizes and eliminates organic contaminants

Use Frequency - As needed

Make managing your water balance simpler and more cost-effective with AquaDoc's calcium hardness increaser. Our spa calcium hardness increaser is essential for maintaining proper water hardness levels in your hot tub. AquaDoc's Calcium Booster ensures your hardness levels stay optimal.

Prevent corrosion, etching, and staining with AquaDoc's Professional Grade Hot Tub Calcium Increaser, your best defense against soft water in your hot tub or spa. Safeguard your calcium levels from dropping too low with our spa calcium booster.

How it works AquaDoc's Hot Tub Calcium Hardness Increaser works by raising your water's hardness level to ensure well-balanced hot tub water. Our spa hardness increaser easily increases your calcium levels by 10ppm increments or more.

The preferred choice of hot tub owners, AquaDoc's Calcium Hardness Increaser is a must-have among spa chemicals. Avoid unbalanced calcium hardness in your hot tub with our reliable calcium booster.

Easy to use and proudly made in the USA, simply check your calcium levels, add 1 ounce of AquaDoc's Calcium increaser to boost water hardness by 10ppm, adjust the amount based on your hardness level goal while the equipment is running, run the filter for 1 - 2 hours, wait 20 minutes, then retest the water.

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