Hot Tub Bromine Tablets 20g

£18.47£222.00 Inc VAT

Spa Bromine Tablets 20g

Spa hot tub bromine tablets make for an effective way to disinfect your hot tub or pool. They can be placed in a floating dispenser on top of the water, or you may place them inside erosion feeders and let them drain and dissolve naturally as needed.

Hot Tub Bromine Tablets 20g are ideal for hot tubs and spas in challenging water areas. These tablets provide a powerful way to protect the surfaces of your hot tub, water spa or pool from mineral deposits and corrosion.

Their active ingredients are released slowly, making them last longer and ensuring your water stays clean. They also effectively maintain healthy bromine levels in your water by producing free active bromine, which kills bacteria and other potentially harmful organisms, keeping it safe for swimming and other activities.

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Product Description

Our ClearSpa Hot Tub Bromine Tablets – Hot Tub 20g – Hot Tub in 1kg, 2.5kg, 5kg, 10kg & 20kg: Safe and Highly Effective

Bromine is one of the most effective yet inexpensive oxidizers used in hot tub water and spas; these tablets are easy to use and provide a stable supply of bromine for your spa or pool! In addition, these hot tub chemicals are also gentle and significant because they have no smell or taste.

All you need to do is place them in erosion bromine feeders or varying floating dispensers in your spa or pool so they dissolve over time to produce free active bromine. If you experience low bromine readings, you can adjust the feeder device to maintain higher bromine levels.

Hot Tub Bromine Tablets last longer than Bromide salt, saving you money. Brominating Tabs are a good choice for spa owners who prefer chlorine alternatives or have sensitive skin irritated by chlorine products.

Why use Bromine Tablets?

  • Place 20g tablets in a floating dispenser.
  • The tablets are small and lightweight enough that they won’t affect the balance of the pool or spa.
  • Tabs dissolve slowly over time, which is better for balancing pH levels because bromine doesn’t change the temperature of the water. Bromide has a strong bleach-like smell and taste, while Bromine has no smell or taste.
  • Our 20g tabs last longer than Chlorine tablets, so they save money.

Do hot tub bromine tablets last longer than chlorine tablets?

  • Bromine tablets typically last longer than chlorine tablets due to their slow-release properties. Bromine is more resistant to UV rays and has a higher oxidation potential, which allows it to stay active in your water for longer. Additionally, bromine tablets are less affected by pH fluctuations and less sensitive to temperature changes than chlorine tablets.
  • This means you can enjoy the benefits of clear and clean water for a more extended period with bromine.

How long do bromine tablets last in hot tubs?

  • Bromine tablets are designed to last longer than chlorine tablets, making them an ideal choice for keeping your hot tub or spa clean and safe for a prolonged period. Bromine tablets can last up to a few weeks in hot tubs and spas. The duration depends on the calcium content of the water and the amount of use.
  • Refilling your bromine tablets every few weeks allows you to enjoy clean, brominated water throughout the year.

Does having high calcium levels affect bromine tablets?

  • Yes, the calcium content of water can affect bromine tablets. High calcium levels in water can make it more difficult for the bromine to do its job and may cause it to break down faster. Additionally, minerals such as magnesium and iron can reduce the effectiveness of bromine tablets.
  • To ensure that your bromine tablets last as long as possible, you should regularly test and adjust the pH levels and calcium hardness of your hot tub or spa water.

ClearSpa Bromine Tabs can also work in conjunction with our ClearSpa Bromine Granules.  Would you like to know more about the Global Market regarding Bromine or even why bromine tablets are so widely used? Or even what are Bromine Granules; we have it all within our blog section; take a look.

How to Use


1. Maintain the pH balance between 7.4 – 7.6.
2. Test the water with a BROMINE test kit, the ideal reading is 4 – 6ppm.
3. When using a floating dispenser or erosion feeder always refer to the manufacturer’s guidelines.
4. Only Spa Bromine Tablets in the floating dispenser or erosion feeder and NEVER MIX CHEMICALS.
5. One Spa Bromine Tablet will typically treat 1000lts of water, for water volume above 1000lts add a minimum of 2 Spa Bromine Tablets to the floating dispenser or erosion feeder.
6. Monitor the Total Bromine readings; you may need to adjust the dispenser or feeder for flow.
7. Should you experience difficulties maintaining your bromine levels you should contact your dealer for further advice.


• Always ensure bathers are out of the water when adding chemicals.
• Never mix with any other chemicals including cleaning products, weed killers, and chlorine products, as a dangerous reaction may occur.
• Always handle products in a well-ventilated area.
• Always wash hands thoroughly after handling chemicals.
• Store in a cool, dry, well-ventilated, secure place. Ensure chemicals do not become damp in storage.
• Instructions and dosages given are a guide to the most effective use.


• This container must not be used or contaminated with any other materials.

Additional Information

Weight N/A

1kg, 2.5kg, 5kg, 10kg, 20kg



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Are Bromine Tablets the same chemical as Bromine Granules

  • The short answer is no; hot tub bromine tablets and bromine granules are different. Bromine tablets are a type of chlorine-free sanitiser made from sodium bromide powder. The tablets dissolve slowly in water, releasing an active ingredient that kills bacteria, algae, and other microorganisms.
  • On the other hand, bromine granules are made from calcium hypochlorite or chlorine and sodium bromide powder. The granules rapidly dissolve in water to release free chlorine that helps to keep swimming pools clean by killing bacteria and microorganisms. Bromine granules are classified as Bromo chloro dimethyl hydantoin UN3077 and are traditionally used for daily dosing and maintaining bromine levels.

What other alternative sanitiser options would there be apart from bromine tablets?

  • Aside from hot tub bromine tablets, there are several other chemistries that can be used as an alternative sanitiser available on the market that is effective in keeping recreational waters safe and clean and free from other potentially harmful organisms and keeping bacteria at bay.

Can I throw a bromine tablet in my hot tub or pool without using a floating dispenser?

  • It’s not recommended, as the bromine levels in the water will not be accurately monitored and would harm users and the fabric of your spa or pool. Instead, it is best to use a floating dispenser such as a chlorinator or brominator to ensure the chemical levels are balanced and monitored correctly throughout the year. This ensures your pool or hot tub is always safe for swimming and soaking!

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