Slow-dissolving 20 g bromine tablets for label-approved hot tub and spa systems. Follow the product label for dosing and dispenser settings, and test the water regularly and before bathing. Adding tablets does not guarantee a sanitiser level for a fixed period.
Available in 1kg, 2.5kg, 5kg, 10kg, 20kg and 25kg tubs.
No fixed tablet count or replacement interval is recommended here without verified product-label evidence. Use the current label to select the dose and dispenser settings for your actual water volume. Test regularly and before bathing, and adjust only as directed. Tablet dissolution time is not a guarantee of sanitiser concentration.
20 g slow-dissolving bromine tablets. Check the current product label and safety data sheet for the formulation, active ingredient concentration and approved uses.
The tablets release sanitiser as they dissolve. Flow, temperature and dispenser settings affect dissolution, while bathing and other water conditions affect sanitiser demand. A water test is needed to check the resulting level.
Slow release does not remove the need for regular testing. Neither the number of tablets present nor the time since dosing confirms that the water meets the label's bathing requirements.
There is no fixed replacement interval given here. Dissolution varies with flow, temperature and dispenser settings. Follow the product label, inspect the dispenser and test regularly; tablets remaining do not guarantee an adequate sanitiser level.
Only if the product label and your hot tub and dispenser manufacturers permit this treatment. Check their instructions before use; compatibility should not be assumed.
Use the current product label's instructions for your measured water volume and approved dispenser. No universal tablet count is recommended here. Test regularly and before bathing, and adjust as directed.
Pack life depends on label-led dosing, water conditions and use. A fixed number of weeks or months cannot be promised.
We do not claim suitability for sensitive skin or that bromine is gentler than chlorine. Bromine products can cause irritation or allergic reactions. Follow the label's precautions and seek medical advice if you have concerns or experience symptoms.
Do not add bromine tablets unless both the product label and your spa-system manufacturer explicitly permit them. Switching off a salt cell alone does not establish compatibility.
Refer to the current product label and safety data sheet for the active ingredient and concentration.
Temperature and use can affect tablet dissolution and sanitiser demand. Follow the label and equipment instructions, and use test results rather than a fixed-duration assumption.
Follow the product label and spa manufacturer's treatment instructions. Any additional treatment must be compatible and label-led; no universal weekly shock dose is recommended here.
Do not bathe. Check the result and dispenser, follow the label's corrective dosing instructions and retest before use.
Stop bathing and test the water. Smell alone does not show the bromine level. Follow the label and spa instructions rather than adding chemicals based on smell.
Check flow, temperature and dispenser settings against the manufacturer's instructions. Retest the water and make only label-directed adjustments.
Choose a sanitiser approved for your equipment and follow its own label. Neither tablet type guarantees a fixed period of sanitisation or suitability for sensitive skin. Never mix them in a dispenser.
They have different application and dosing instructions. Use only products approved for your system, follow each label and test before making treatment adjustments.
How the three main hot tub sanitiser families compare for everyday use, hot water performance and running cost.
| What matters | Chlorine | Bromine | Chlorine dioxide |
|---|---|---|---|
| Best for | Fast, low-cost everyday sanitising | Hot tubs and spas that want a steadier, milder feel | Deep cleans, biofilm removal and problem water |
| Ideal level | 3 to 5 ppm free chlorine | 4 to 6 ppm total bromine | Used as a clean-up dose, not a daily residual |
| Performance in hot water | Burns off faster at spa temperatures | Stays effective in hot water | Used as a strong clean-up dose, often chosen for biofilm problems |
| pH sensitivity | Works best at pH 7.2 to 7.6 | Effective across a wider pH range | Largely unaffected by pH |
| Odour | Noticeable when chloramines build up | Milder than chlorine | Low odour at normal clean-up doses |
| Typical running cost | Lowest day to day | Slightly dearer than chlorine | More per dose, but only used occasionally |
| ClearSpa products | Stabilised chlorine granules and mini tablets | Bromine tablets 20g and bromine granules | Chlorine dioxide |