Your hot tub service routine

Sticking to a regular routine is the secret.

Your hot tub is the ideal place to soak away the aches and stresses of a busy day but the last thing that you need when you lift the cover and are just about to slip into the water is to think that it doesn’t look quite as bright and sparkling as you would like it to.

If you get into a regular routine then just a few minutes a day will ensure that your spa is always in perfect condition for you to enjoy.

A daily check.

This will only take you a couple of minutes each day but it will help stop any problems before they really start.

Test the chlorine and PH levels. In the past this would mean taking a water sample but these days a simple test strip will let you know that all is well or that the levels need to be adjusted. Simply compare the colour that the strip changes to with the colour chart on the container and that will give you your answer.

Once a week.

Once a week you should shock your hot tub with an oxidising agent such as Spa refresh or Non chlorine shock.

Shock oxidising every week starves bacteria and helps keep the water from becoming cloudy.

Don’t shock your spa right before you are about to use it, do it a couple of hours before.

Every month.

Once a month you should clean the water filter cartridge and test the water balance.

To clean the cartridge you simply remove it from the spa and soak it in a cartridge cleaning solution that will break down any fats that are clogging the filter as well as killing any bacteria. Most cartridge filters need to be soaked over night and it’s always better to dry a cartridge before it’s re-installed so having a spare set means that you can do this while still being able to use your spa.

After soaking, the filter needs to be thoroughly rinsed and there are products available that attach to a hose and do the job thoroughly, quickly and safely.

Balancing the water in your spa means getting the Calcium hardness, total alkalinity and the PH to the right levels. It makes the water as ‘comfortable’ as possible and protects the equipment in your spa.

Calcium Hardness will vary depending on where you live. You probably know if you live in a hard water area or not and your familiar with how that effects things like kettles and washing machines.

Water that is too soft can become corrosive and damage your spa heater or pump and if the water is too hard then it might start to look cloudy and you can get calcium deposits on the spa shell, heater and filters.

Total alkalinity acts as a buffer to stop the pH levels fluctuating too widely but always balance the PH levels before you balance total alkalinity. You can use test strips to check both readings in your spa.

This all sounds fairly complicated but all these products come with very clear instructions and you should remember that they are designed to be used by people just like you.

You really don’t need a degree in chemistry to get this right and keep your spa water bright and clean.


Every 2 or 3 months you should drain and refill your spa as the water can only hold a certain amount of chemicals and particles too small for the filters to catch. Once this level (known as TDS or Total Dissolved Solids) is reached, all the balancing mentioned above becomes difficult to achieve.

The filters will probably need changing once or twice a year and while you are doing that then check the thermal cover and spa cabinet for any wear or damage that might need attention.

That all might seem like quite a lot of work but it quickly becomes second nature and in all honesty you’ll probably spend more time mowing your lawn – and then once you put the mower away, you’ll have a clean, bright spa to sink into.


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