How Often To Change Hot Tub Water

Those who have never owned a hot tub before might not have even considered that you regularly need to change the water. Hot tubs are closed systems which means that freshwater isn’t being introduced. And although regularly adding sanitizing chemicals will inhibit the growth of bacteria and mold, over time, dirt, oils and other contaminants will build up and may cause it to smell, turn cloudy or irritate the skin. For this reason, it’s important to change the water regularly. How often to change hot tub water? This article will run through different scenarios.

How Often Should You Change Hot Tub Water?

The general rule of thumb when it comes to changing the water in your hot tub is every three to four months. However, it should be noted that this is just a general rule and that you may need to change the water in your hot tub more often than that. Several things will dictate how often your hot tub water needs changing: How often it gets used, how many people are using it, how often people shower before using the hot tub, how diligent you are with maintaining the water chemistry, the amount of airborne contaminants that get into the water and more. Below are some qualitative examples of how you’ll know when you need to change the hot tub’s water.

The Hot Tub’s Water Is Cloudy

Cloudy water can be caused by a lot of different things. It could be a sign that bacteria are starting to build up, algae is starting to grow or body oils, soap, lotions and other cosmetic residues are starting to overwhelm the sanitizer. One way to clear the water is to add a spa shock. This doesn’t have anything to do with electricity. It’s the addition of chlorine or potassium-based cleaner that breaks down organic contaminants such as bacteria, algae or body oils. If the addition of a shock doesn’t clear the water, it’s probably time to empty the hot tub and refill it.

There’s An Excessive Amount Of Bubbles In The Hot Tub

One of the things a hot tub is well known for is the warm, bubbling water. But if you get too many bubbles or thick layers of foam, it could indicate that the water chemistry has become unbalanced. Foam can be caused by a buildup of personal care products such as soap, deodorants, lotions and creams introduced to the water by the bathers. Foam buildup can also be caused by a buildup of body oils. This is why it’s so important to shower before using the hot tub. Other contaminants such as sugars from food, alcohol and other beverages can increase the amount of foam in the hot tub. You can try to counteract the foam by adding a foam remover, but it’s considered a temporary solution at best. If your hot tub is producing an exorbitant amount of foam, it’s likely time to change the water.

The Hot Tub Water Smells

If your hot tub water is starting to smell like chlorine, it’s a sign that the chlorine you’ve already added has been converted into chloramines and more chlorine sanitizer is necessary. If the water is starting to smell foul, it’s likely because bacteria, mold, mildew or algae are growing and dying in the water. If the addition of sanitizer isn’t rectifying the problem, it’s best to change the water.

Scaling Is Starting To Occur

Scaling is the result of calcium chloride and other solids precipitating out of the water. This means your water chemistry is out of balance. Test your water for calcium hardness and total dissolved solids to see if you can get it back into balance. If that doesn’t seem possible, it’s probably time to start again from fresh and change the water in your hot tub.

Now that you identify the signs that tell you how often to change hot tub water, download a free buyer’s guide for more information.

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