Some Basics About Hot Tub Chemicals

hot tub chemicals

Maintenance is important for any big investment, and a hot tub is no exception. Special chemicals are needed to keep your hot tub sanitary and to make sure that the water chemistry is properly balanced. Without them, bacteria growth and mineral buildup could damage your hot tub’s water heater and pipes, as well as promoting possible illness in hot tub users. However, it can be difficult to decide which hot tub chemicals to use in your spa. Here’s a short guide to some of the most common options and how they work.

Chlorine: You’re probably familiar with this chemical as a pool sanitizer. It’s used in a different concentration in your hot tub, so be sure to buy the right kind. You can purchase granules and tablets formulated specifically for use in hot tubs. Chlorine can also be used to shock a tub where the sanitizers have failed, or the upkeep of which has been poor. To do this, use a larger concentration of chlorine, and stay away from the hot tub for a day or so.

Bromine: This hot tub chemical comes in the form of granules, tablets, or nuggets. It also comes in a few forms. One is sodium bromide. This needs to be activated with an oxidizer. Chlorine is one. Potassium Monopersulfate, also called non-chlorine shock, is another. If you’d prefer not to have to activate your bromine, you can purchase BCDMH, a self-activating combination of chlorine and bromine. Many people prefer bromine for their hot tubs over chlorine since it’s less likely to off gas harmfully. Bromine can also work in a wide range of pH levels, so it’s less likely to stop functioning entirely if your water chemistry is off. Generally, bromine is distributed via a cartridge system or a floating feeder.

Biguanide: These sanitizers contain neither chlorine or bromine. Instead, they kill bacteria by attacking their cell walls. A hydrogen peroxide based oxidizer is used to burn off any organic matter, keeping the water clear. The benefit of biguanide sanitizers is that they produce less smell than either bromine or chlorine, and don’t off gas at the temperatures used in a hot tub.

Ozone: This is technically an oxidizer, not a sanitizer. However, it reduces the amount of work that you need to perform with sanitizers, lowering the level of hot tub chemicals you’ll need. To use ozone in your hot tub, you’ll need to have a type of equipment called an ozonator. Even with this device, you’ll still need to use a little chlorine or bromine, just not as much. Some say that ozone alone will sanitize a hot tub, but this is a myth. Ozone is compatible with almost all sanitizers.

Mineral Spa Care: Mineral systems can replace your sanitizers, but they can assist them. Generally, you’ll place a mineral cartridge inside your filter cartridge, or in a floating dispenser. Sanitizing minerals will then slowly disperse through the water, lowering the amount of chemicals you’ll need to keep your hot tub clean.


Sanitizing Hot Tub Water

Sanitizinf A Hot Tub
Hot tubs require the use of sanitizers along with purifiers in order to keep the water clean in addition to healthy. Sanitizers and also purifiers are a product that, when added to your water, kill bacteria plus odor. Nowadays, there’s an assortment of different products that work to purify your hot tub water. The information on the following pages provides a short explanation of each of the sanitizing methods, also a listing of advantages and disadvantages.

Mineral Based Purifiers

Mineral purifiers are based on mineral-bed technology, built on step forward advances that recreate nature’s own process of purifying water. It is, in effect, a two part system: a tubular structure is placed within the spa’s filter, along with then a non-chlorine/non-bromine activator is spare to the spa’s water before every use. There is no required maintenance when the spa is not in use, which makes it a very easy science to use. The cylinder shaped purifier that is placed within the filter only needs to be replaced every three to four months, or every time you drain your hot tub. Though it is not registered as a sanitizer, it is a highly dynamic purifier that easily meets the disinfection standards of the National Sanitation Foundation along with the guidelines set by the EPA for bacteria in drinking water. Unless there is heavy usage of your hot tub, mineral based purifiers may well take out the necessity to use bromine or chlorine on the same explanation in luxury spas that are equipped with ozonators. There are a range of different forms of mineral based purifiers that are someone produced under different names, such given that Nature2, ThermoClear along with The Frog.

Mineral based purifiers are promptly becoming the most popular science of purifying hot tub water. Their popularity is due to the fact that it is completely easy to use, works very well, and requires little maintenance. Due to the whole thing of the extravagant benefits of mineral based purifiers, we recommend this methodology the most for sanitizing your hot tub water.


1. It works up to fifteen times faster than chlorine.
2. If your spa has an ozonator, it will augment its efficiency furthermore might clear the need for chlorine or bromine.
3. It is unalterable by hot water temperatures.
4. It produces clearer water, freed of stickiness plus odors.
5. It helps to clear the discomfort of eye as well as skin irritations.
6. Swimming apparel lasts longer as well as won’t bleach out.
7. It helps to thin down unsightly scum lines on the subject of the hot tub.
8. It helps to decrease the water from foaming.


1. It does not fit every filter. If your filter doesn’t contain a prime hole, mineral based purifiers will not be compatible.
2. It is not compatible with bromine or baquanine. If you are switching to from bromine or baquanine to a mineral based purifier, we recommend that the spa be drained. Flush out the lines with a fabricator recommended cleaning source to absolutely remove any traces of bromine or baquanine from the lines. Using a mineral based purifier in water that contains a certain amount trace of bromine or baquanine will achieve the water to be converted into discolored and will prohibit it from adequately purifying the water.


Chlorine sodium dichlor is the most ordinary chemical sanitizer used in hot tubs. Plainly throw in 1 – 3 teaspoons of granulated chlorine into your luxury hot tub every other day to preserve a chlorine level of 1 – 3 PPM (parts per million).


1. There is less of a chance of staining as it is such a beneficial oxidizer.
2. It is pH neutral, so it doesn’t throw off your pH reading.
3. It is highly soluble plus fast-functioning.


1. The intense scent of chlorine can be offensive.
2. Some people contain reported an itch and/or rash from using chlorine.
3. It doesn’t store itself well within the water, so you must use it regularly to keep on adequate chlorine levels.

Bromine Tablets

Bromine tablets are a partnership of 70% sodium bromide and 30% chlorine. The tablets are inserted into a dispenser that floats in the water, providing regular disinfection. Once you fill the luxury hot tub with water, add 2 oz. of sodium bromide to activate the tablets. You must maintain a bromide residual reading the least bit times. If the reading drops to “0” from a lack of keeping the dispenser full, you must give a contribution a new 2 oz. of sodium bromide.


1. It is easy to use – ordinarily keep the dispenser filled.
2. The scent of chlorine is diminishd.


1. The dispenser should be removed when using the luxury spa, becoming a danger to adolescents outside the spa.
2. Bromine can potentially bleach out the affordable hot tub’s shell surface.
3. A slight odor may still exist for the tablets suit 30% chlorine.
4. Tablets are not pH neutral, so you need to adjust your pH more frequently.
5. People have a habit of leaving tablets in the dispenser to deplete, requiring the need to have a say more sodium bromide.

A two-Part Bromine System

Higher than bromine tablets or chlorine, we feel that the a two-part bromine system is the most powerful way of purifying your water. In any way, it is not a very popular manner of working due to the difficulty that numerous consumers contain in adjusting to furthermore becoming knowledgeable close to its procedure. Once the pattern is learned, aplenty people find the a two-part bromine system the paramount way to sanitize their hot tub. The system consists of two ingredients: bromide liquid salts (sanitizer) as well as hot tub activator (activator). Bromide liquid salts are a water solution of sodium bromide that is the dominant sanitizing originator for your spa. Hot tub activator is a granular based oxidizing agent that incorporates no bromine or chlorine, excluding activates the sanitizer.