What chemicals do I need for my hot tub?

What chemicals do I need for my hot tub?

Once you got yourself a hot tub and the perfect place for it, enjoyment can start. But before that, think about hot tub chemistry. It's something most people don't count at first, but it's very important.

Controlling the chemistry in your hot tub is very similar to a swimming pool. Chemicals in the hot tubs include sanitizers, alkalinity, shock treatments, and pH levels. Although it may seem like complicated stuff, don't panic because it's not. In this article, we will show you and introduce to you all the chemicals you will need.


Spa Chemicals

Before doing anything you should use spa chemicals, especially if you are filling your tub for the first time or reopening it. Use Spa Metal Free, it's perfect for a start to make the balance in your water before any chemicals are used. Let Spa Metal Free flow for around four to six hours. The spa test kit is the second thing you will need in the beginning. You must take a water pattern to define your present water chemistry. With this kit test, you will test chemicals such as bromine, calcium hardness, and pH. For each of these chemicals, you have a suggested range, and try to obey these terms in order to mix all of them properly. For example, pH should be between 7.2 - 7.8, alkalinity should be from 80 to 120 ppm while calcium hardness must be between 150 - 400 ppm. Of all these mentioned, first, go with calcium hardness, after that pH balancer, and lastly, sanitizer.


Calcium hardness

Calcium hardness is the number that shows you the amount of calcium and magnesium in your tub. Actually, calcium can be found in any sort of water even in this you use every day in your kitchen. Calcium hardness is important because if it's too low your hot tub will be vulnerable to erosion. To avoid any kind of damage we suggest you add calcium hardness in the range we mentioned earlier.


Alkalinity and pH

Alkalinity is closely connected with pH. Alkalinity will show you the amount of carbonates and bicarbonates in your hot tub. That amount will stabilize the pH in your water. So, pH actually measures how acidic is water in your hot tub. If the pH is below 7.0 it's a sign that water is too corrosive and will destroy your tub. If the pH is over 8.0 that causes cloudy water, but also that means your water has too much calcium in it. In the end, it's pretty simple, if your pH is too low add Spa pH increased. On the other hand, if it's too high, add some Spa pH decreased.



Another useful chemical definitely is bromine. Bromine is a very effective sanitizer that well-tolerated heat. The only problem could be his price because he's a little bit expensive but worth it. He kills bacteria and viruses very effectively and probably won't cause skin problems.


Shock your water

Besides all chemicals we mentioned, another important thing you need to do is to shock your hot tub. Shocking your hot tub water is needed if you are going to use it after a long time or maybe the first time ever. Chlorine and bromine formed shock will kill every single bacteria in your tub. Also, it will eliminate organic compounds that are in a tub for sure if several people use it at the same time.


Spa fragrances maybe

Fragrances are something to fix the atmosphere, not something you must have. There are many kinds of fragrances that are made especially for hot tubs. Prices are not too excessive, so why not?