Made in Sweden for the Nordic climate

Good to know about chlorine use in your spa

In your bath, you need to clean from both visible and invisible dirt.

Filters and filter balls

Your filter purifies the water from visible dirt. We include a set of filter balls with our terrace pools.

You need to replace the filter balls occasionally, depending on how you use your pool. If many people use it and it’s hot outside, they need to be changed more often compared to if only two people use it once a week and it’s winter. You can keep track by looking at the filter balls and the pressure gauge can also indicate when it’s time to change them.

Can filter balls be washed?

Filter balls can be washed, but when they become stringy and/or hard, it’s time to throw them away and replace them with new ones. A tip is to have two sets at home that you can alternate between. Read about how to change filter balls here.

pH regulation

Disinfectants, such as chlorine or bromine, work best between a pH value of 7.2 and 7.6. So you should not have too acidic or alkaline water in your pool. The optimal pH value for your terrace pool and yourself is 7.0-7.4.

To keep track of your pH, you need a pH meter, we have this in our range. Whether you need to add pH negative or pH positive depends on how your water quality is where you live.


The most commonly used disinfectant is chlorine or bromine. Disinfectant is added to eliminate bacteria, algae, and fungi, in other words, invisible dirt. It is thanks to these agents that the water becomes clear and fresh.

You need to keep an eye on your water to maintain a proper level of chlorine/bromine. You measure this with the same meter that measures pH, which can be found here. The amount of disinfectant you need to use depends on how your pool is used, water quality, and temperature.

In some cases, you may need to add flocculating agents and/or an algaecide. Algaecide is mainly used to prevent the formation of algae. If it has already appeared, it is most effectively removed with extra chlorine (shock chlorination). With normal water quality and regular chlorination, algaecide or flocculating agents are usually not needed. If you want to use flocculating agents, you need to switch to sand or glass filter media, as the flocculating agent quickly clogs the filter balls.

You can find all our pool chemicals here.

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