Got yourself a new hot tub and want to take it to the next level?
Here’s everything you need to know about what chemicals are needed for a hot tub and a few practical maintenance tips for it.
5 Chemicals You Need for Hot Tub Maintenance
The hot tub chemical guide is a lifesaver for many hot tub owners, especially if you’re new to this stuff. Explore this section to discover 5 common hot tub chemicals necessary for maintaining your spa!
Hot Tub Sanitiser
Add hot tub sanitiser containing bromine and chlorine to eliminate any possible buildup. This solution combats bacteria and other viruses to keep your water clean and safe.
Refer to this table and find the best chemical needed to maintain your hot tub.
| Chemical Sanitizer | Cost | Smell | Effect | Skin Irritation | Recommended Quantity |
| Bromine | Expensive | Mild/ Pleasant | Long lasting | Ideal for allergic people | 3 to 5 ppm. |
| Chlorine | Affordable | Unpleasant | Doesn’t last long | Depends on usage | 1 to 3 ppm |
Calcium Hardness Increaser
Using a calcium hardness increaser will lower the risk of corrosion, as hard water can eat away at your hot tub’s exterior. Conversely, an increased level of calcium can cause erosion and clogs in the filter, leading to costly repair and disruption in pH levels.
To keep your hot tub water clean, maintain the calcium hardness within the range of 175 to 250 ppm. Distribute chemicals evenly, and in case of excessive hardness, drain, clean, and refill the hot tub promptly.
Hot Tub Line Flush Cleaner
Piping and drainage systems can accumulate dirt and debris, leading to potential blockages. Use flush cleaners to remove mineral buildup and drain every 2-3 months to prolong life of your hot tub.
You can also use natural ingredients like vinegar as a great alternative and refill hot tub with fresh water.
Alkalinity Increaser
To keep the total alkalinity levels of your hot tub in check, use a pH increaser to prevent damage to hot tub components.
Adding baking soda to the spa water can help keep the water clean and lower the acidity levels.
Hot Tub Shock
If you notice cloudy hot tub water, it is important to shock a hot tub to prevent the growth of algae and contaminants.
For regular hot tub maintenance, use shock treatment and non-chlorine shock to ensure that the water remains clean and balanced.
Note: Always buy your chemicals from a reputable store for the best quality.
What Happens When You Use Hot Tub Without Chemicals?
It may surprise you, but you can enjoy your hot tub without chemicals. You’ll need to use vinegar or borax to have similar effects, but they can’t replace products designed to filter and sanitize your hot tub.
The absence of spa chemicals like chlorine and bromine in your tub water can result in a disruption of the chemical levels.
How Long Do Hot Tub Chemicals Last?
The longevity of chemicals can vary between 3 to 6 months, depending on factors like temperature, frequency of use, and whether the hot tub is located indoors or outdoors.
Hot tub covers contribute in water care by making chemicals last longer and keeping them protected by direct sunlight.
Everything You Need To Know Before Adding Chemicals to Your Hot Tub
Adding all chemicals directly to your hot tub can have serious consequences. Here are some tips that will guide you how to add the right chemicals to keep the hot tub water balanced at the right time
- Measure the chemicals needed before adding them directly to the hot tub water.
- Allow the jets to run for an even distribution of chemicals, and drain your hot tub immediately when there’s an excess of concentration.
- Once the chemicals completely dissolve, test the water and wait 15 minutes before adding the next one.
- You need to add hot tub chemicals in a specific order according to your needs. In a freshly filled hot tub, add a stain preventer, an alkalinity increaser or decreaser, a hot tub sanitizer, and a calcium hardness increaser.
- To maintain your hot tub care, drain and refill the hot tub before every use.
- Keep the covers on to protect your pool and hot tub when not in use. This will prevent chemical evaporation and maintain its balance.