How To Lower Chlorine In Your Hot Tub Without Spending Much

This post describes how to lower chlorine in a hot tub by using simple and cost-effective methods.

If you're like me, you've probably been in a hot tub at least once. It's one of the most relaxing experiences you can have. Unfortunately, it can also be one of the most frustrating if you have a problem with the chlorine levels in your hot tub. The good news is that there are easy ways to lower chlorine levels in your hot tub without spending a lot of money.

3 Ways to Reduce Chlorine Levels in Your Hot Tub

High chlorine levels are harmful to your health and your hot tub. Fortunately, you don't have to spend much money to lower your hot tub's chlorine levels. We've picked three of the easiest ways to use simple, inexpensive tools.

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Method #1: Leave the Hot Tub Alone

Chlorine in your hot tub dissipates on its own as time goes by. In fact, you won't have any chlorine left in your hot tub if you leave it long enough.

Exposing your hot tub to direct sunlight hastens the process, which is good if you want to quickly lower your chlorine levels. Just remember to check your chlorine levels from time to time. You don't want your chlorine level to go all the way down, and add an extra step of raising the chlorine level back up.

leave the hot tub alone

It'll probably take a few hours to a day to lower your hot tub's chlorine level depending on the weather condition or how much ppm (parts per million) your hot tub currently has. Aim for 1.0 to 3.0 ppm, which is the ideal chlorine level for swimming pools and hot tubs.

Method #1: Add Fresh Water

Another way to reduce chlorine levels in your hot tub is to simply drain some water out and replace it with fresh water. The best way to go about this method is to do it incrementally and check the chlorine levels each time. Some hot tub owners are tempted to drain a lot of water that they end up adding chlorine after putting fresh water in.

method 1 add fresh water

The water level should drop two to three inches from the waterline when draining the water out. Top it off with fresh water, let it circulate, and check the chlorine level. Repeat the process until you achieve the ideal ppm of 1.0 to 3.0.

In some cases, you need a complete drain and refill if the water chemistry is off after balancing your chlorine levels. This usually happens after two to three weeks of heavy use or skipping some maintenance checks.

Method #1: Use Chlorine Naturalizer

If you need to reduce chlorine levels in a pinch, you can go for the quickest route by adding some sodium thiosulfate into your hot tub. This breaks down chlorine (or bromine) in your hot tub pretty fast, allowing you to use your hot tub within minutes.

use chlorine naturalizer

For this method, you will need 2 oz per 10,000 gallons of water to lower chlorine levels by 1.0 ppm. It's the cheapest, most reliable method to reduce chlorine levels using chemicals. Check if your chlorine level has gone down to 1.0 to 3.0 ppm, and repeat the process as needed.


You can use several different methods to lower chlorine in your hot tub. Choose the best method depending on your needs and the tools available for you. The best part is, you can do all of it on your own and without spending much.