• AquaCalcium, maintains proper calcium levels in spa water
  • Calcium Increaser for maintaining optimal spa balance
  • Shield spa equipment against corrosion with Calcium Increaser
  • Ensure crystal-clear water with Calcium Increaser
  • Prevent cloudy water with Calcium Increaser for hot tubs
  • Calcium Increaser for pristine spa experience
  • Maintain water clarity with Calcium Increaser
  • Protect spa equipment with Calcium Increaser
1 8

Calcium Increaser for Hot Tub

Calcium Increaser for Hot Tub

$25.00 $19.99
Sale Sold out
Shipping calculated at checkout.

Maintain optimal balance and prevent corrosion for clear, cloud-free spa water.
Size
Pack
Product Details

Our Calcium Increaser maintains optimal balance, shields against equipment corrosion, and ensures crystal-clear, cloud-free water for a pristine spa experience.

How to use

1 level capful (2 level tablespoons) of this product will increase the calcium of a 500 gallon spa by approximately 10 ppm.

DIRECTIONS for use:

  1. Determine amount of product to be added using a calcium hardness test kit.
  2. Pour proper amount into spa or hot tub with equipment turned ON.
  3. Run filter for 1-2 hours.
  4. Water may be retested in 20 minutes.
Frequently Asked Questions

How do I decrease calcium levels in my hot tub?

If calcium levels are just a little high, drain some water from your hot tub and replace it with fresh water. Test levels and repeat if necessary. Always use AquaDoc's Stain & Scale control to keep Calcium levels at the proper levels. If Calcium levels are extremely high, it's recommended that you completely drain your hot tub and refill.

What if Calcium scale deposits have formed on my hot tub?

If you're already dealing with a scale issue, we recommend you use AquaDoc's Spa Stain & Scale formula to help remove and prevent future scale buildup. It's also recommended you take special care to balance your calcium levels moving forward to reduce overly hard or soft water.

Where is AquaDoc's Calcium increaser made?

Our product is proudly made, packaged, and shipped from the USA.
View full details

Why is AquaDoc the Best in Pool Chemicals?

  1. 🌿 Paraben free & Aluminum free
  2. 📦 Fast Shipping
  3. 🇺🇸 Made in the USA

Order With Confidence

If our products don't solve your (pool or spa-related) headaches, contact us for a 100% refund. Free shipping on all orders over $75!  

As seen on

100% Paraben Free

Say goodbye to parabens that can potentially be harmful to your family. All of AquaDoc's chemicals are paraben and aluminum free.