What is this white build up in my hot tub?


What is it?

The white build up is usually caused by calcium in your water. Metals and minerals are present in every type of water source (city, rural, or well). The consistency of those metals and the content of them varies greatly depending on your water source and your location.


Why do I have it?

Calcium can precipitate in the hot tub when it oxidizes with other chemicals in the water. The oxidization process usually occurs shortly after sanitizer or shock has been added to the water, which causes a reaction to occur. With calcium, the reaction that occurs is it becomes very hard and rough, almost like sand paper. It can also become very flaky and settle to the floor of the hot tub.


How can I get rid of it?

The best way to get rid of it is to scoop it out or vacuum it out. This may require the hot tub to be drained, however. At times, the calcium can cake on the side of the hot tub shell and actually needs to be removed with a product called TLC, which can be found at a hot tub retail store and is safe for your hot tub shell. This cleaner will break up the hard coating of the calcium and allow you to wipe it off easily.


How can I prevent it?

Prevention is key when it comes to calcium and many other metals found in our water sources. Adding a metal remover or protectant upon each new refill of the hot tub can eliminate the oxidization process from happening. It is important to wait 24 hrs after adding this product before you add any additional chemicals, such as sanitizers and shocks. This will allow the product enough time to properly coat the minerals and metals that are in your water, so that they won’t cause any issues. The amount of this product required upon each hot tub fill is dependent on not only the size of your hot tub, but also the metal content of your water.


Want more information? Contact us. Aqua Palace is family owned and operated, offering above ground and in-ground pools, hot tubs, spas and saunas specializing in pool design, installation and repair in Council Bluffs and Omaha metro area and long distance residents (within the US). We are the only Marquis dealer in the Omaha Metro Area with the largest showroom east of the continental divide. If you are looking for your perfect Omaha hot tub store, look no further! Check out our online store for pool and spa chemicals, supplies and accessories.


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Aqua Palace Spas & Pools in Council Bluffs, just minutes from Omaha, is a family-owned business that’s all about the fun, relaxation and therapy found in water and in saunas. We are conveniently located right off I-80 in Council Bluffs with a 5,000 square foot indoor showroom as well as a large outside pool garden. We host the largest indoor and outdoor showroom for hot tubs, saunas, above ground pools and in-ground swimming pools.

At Aqua Palace you can be assured of getting small town integrity, an educational presentation and a totally enjoyable buying experience.  Are you in need of Parts and Supplies, remodeling, pump repair or even swimming pool construction? Come to us for all of your spa, pool or sauna needs including our extensive selection of spa & pool chemicals and accessories!

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