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How to Maintain a Hot Tub

Recommended Hot Tub Care Maintenance Routine

This guide has been written with the view of making you hot tub water extremely safe, you may find some guides online that are less stringent. However, we recommend that this guide is followed as to make sure all risks involved with water care will be reduced to a minimum, so that you and your family can enjoy your hot tub in safety.

All the chemicals you need in order to keep your hot tub in pristine condition can be purchased from Online Chemicals Stores.

Daily (before use): Time: 2 minute.

  • Test chlorine levels to see if they fall between 3-5 mg/l (ppm) and dose according to the attached instructions on the Hot Tub Chorine container.

  • Test Hot tub PH levels to see if they fall between 7.2 and 7.6. If not within these parameters use Hot Tub pH Plus or Minis according to instructions.

  • If water is foaming use Hot Tub Anti Foam. (TIP - Dilute no foam according to instructions into spray bottle and spray onto surface of water [do not use bottle for any other purposes])

Weekly: Time: 10 minute.

  • Shock Hot tub with suitable oxidising agent such as Non chlorine shock or Calcium Hypochlorite.

  • Clean Filter using Hot Tub Filter Cleaner and swap with spare. (you should always have a spare filter as filters have to be allowed to dry first so that the fibres can bind together after cleaning).

Monthly: Time: 5 minutes.

  • If you live in an area with hard water (high Calcium) add Hot Tub Scale Remover.

Periodically (Once every 2 months): Time: 90 minutes.

  • Clean hot tub cover with week solution of chlorine (3-5mg/litre)

  • Replace hot tub filters (6 months - 1 year)

  • Change water

Water Balance

three people in a hot tub

It is important to maintain the correct water balance to create the perfect conditions for you to relax in. We recommend that you follow the guide below in order to achieve this.

Calcium Hardness

It is important to achieve the correct level of calcium in your water, the levels of which will vary depending on where you live and where your water supply comes from. Soft water tends to be low in calcium and hard water tends to be higher. Every time you top up or refill your hot tub with fresh water you need to check levels of calcium.
The ideal calcium hardness level for a hot tub is between 100 -200mg/lIf the level in your hot tub is below this it could lead to corrosion damage. If you do find the level is low, then use Hot Tubs Hardness Plus to bring it up to the correct level. If the level in your hot tub is above this it can lead to the water appearing cloudy. As a result, calcium can be deposited on the tub shell, heater element, filter cartridge element and the pipe work within. To reduce this use Hot Tub No Scale to correct the level.
Total Alkalinity
This also depends on your water source and should be checked every time fresh water is added. The ideal Total Alkalinity for your hot tub is between 125 – 150mg/l If it stays between this it will prevent the pH of the water fluctuating. If the level falls below the recommend amount the water can become corrosive causing damage to the hot tub equipment. This being the case, we suggest using Hot Tub pH Plus to raise levels.
If the level is too high, the water can become poor in clarity and scale will form. To reduce this use Hot Tubs pH Minus.
pH Levels
It is essential you regularly check the pH of your hot tub water using Hot Tub Test Strips. The ideal pH range is between 7.4 -7.6, this is slightly alkaline which protects the hot tub and equipment. It also provides the most comfortable condition for hot tub users and has a good sanitising efficiency. If the pH level is below 7.4 use Hot Tub pH Plus to raise the level and if the pH level is above 7.6 use Hot Tubs pH Minus to reduce the level.


pH level chart



Sanitising of your hot tubs water is vital to kill bacteria and prevent algae growth. Levels should be checked regularly using Hot Tub Test Strips. You can use either Chlorine or Bromine to adjust the levels. Most people use Chlorine, preferring the smell to Bromine.


Using Hot Tubs Bromine is a very effective hot tub sanitizer. It comes in tablet forms making it easy to apply to the water.
The ideal Bromine level is between 3 – 6mg/l


Using Hot Tubs Chlorine is another effective hot tub sanitizer. It comes in granule forms which dissolve very quickly in the hot tubs.
The ideal Chlorine level is between 3 – 5mg/l

We recommend that you oxidise your hot tubs monthly using Hot Tub Non Chlorine Shock. This destroys odours and other undesirable additions such as perspiration, cosmetics and body oils.
By doing this monthly it improves the comfort and hygiene for hot tubs users.
chemical tablets

Hot Tub Speciality Products

Other products also help keep your hot tub clean, clear and enhance your bathing pleasure.

Control of Foam - Due to the circulation and aeration of hot tub water, foam can appear on the water surface which looks unsightly; this is caused by oils and lotions within the water. To reduce the foam use Hot Tub No Foam regularly to prevent and control foaming. If the problem of foam continues after using Hot Tub No Foam we recommend that you drain and refill with fresh water.  

Cleaning your Hot Tub At the waterline, grease and rubbish can build up that creates a line around the tub which provides an ideal ground for bacteria and algae to breed. To remove these lines easily and prevent them appearing use Hot Tub Water Line Cleaning Paste daily.  

Hot Tub Water Line Cleaning Paste should also be used every time prior to refilling. 

Cleaning the Filter CartridgeYou will be able to tell when the filter needs cleaning as the circulation within the hot tub will be reduced and the water cleanliness will change. To avoid the inconvenience of the filter not working we recommend that it should be cleaned at monthly intervals or more if you use your hot tub heavily. Hot Tub Cartridge Cleaner helps clean and restores filters to their full efficiency.


It always a nice touch to add a fragrance to your hot tub water but never use bath fragrance as this will create foam which is not good for your tub. Only ever use Hot Tub Fragrances that have been designed for use in Hot Tubs. Our Online shop sells a wide range of fragrance.

Hot Tub & Chemical Safety Tips

Never allows the water temperature to exceed 40C.

Do not Drink Alcoholic beverages before or during using the hot tub.

• Before children use the hot tub ensure water temperature does not exceed 30C.

• If you are pregnant, suffer from high blood pressure, any cardiovascular condition or on medication always consult your doctor before using the hot tub.

• Keep all chemical containers sealed and out of reach of children.

• Always read and follow the instructions on the labels.

• NEVER mix Chemicals.

• Always add chemical into water, never add chemicals before water.

• Accurately measure chemicals.

• Store chemicals in a cool and dry place.

• Never keep chemical in direct sunlight.

• Always handle chemicals with great care.


Recommended Hot Tub Care and Maintenance Routine

A Simple Guide to Buying a Hot Tub

Hot Tub Chemicals Maintenance






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