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Water chemistry seems to be the main stumbling point for most hot tub owners today. With each hot tub or spa requiring different types of chemical treatments. We often hear and see of water that is almost toxic. The ph is off the scale one way or another, the alkalinity has just burnt a ring around the tub or even worse we hear that people used their new tub and now have a nice chemical rash/burn to deal with. Who are the worse at taking care of their tubs, usually previous or current pool owners. Think about it, a pool holds anywhere from 15,000 gallons of water and up. They treat their pool on a weekly basis with large amounts of chemicals, yet seem to forget their tub holds only 200—500 gallons of water. So their hot tub only holds around 1/30th of the water that their pool does. So we first have to remember that “less is best” when it comes to a hot tub. On the following pages we have assembled some various ways to get control of your hot tub, so you can enjoy it worry free for years to come. Remember, each hot tub manufacturer builds their hot tub to handle water chemistry differently. So what may work well on your neighbors hot tub, may not in yours. |
Water Chemistry Basics |


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Calcium Hardness It is important to achieve the correct level of calcium in your water, the levels of which will vary depending on where you live and where your water supply comes from. Soft water tends to be low in calcium and hard water tends to be higher. Every time you top up or refill your hot tub with fresh water you need to check levels of calcium. The ideal calcium hardness level for a hot tub is between 100 -200mg/lIf the level in your hot tub is below this it could lead to corrosion damage. If you do find the level is low, then use Calcium Plus to bring it up to the correct level. If the level in your hot tub is above this it can lead to the water appearing cloudy. As a result, calcium can be deposited on the tub shell, heater element, filter cartridge element and the pipe work within. To reduce this use a calcium scale reducing product to correct the level. |