How long do the tablets last in a dispenser?

Depending on the flow rate and water temperature, the tablets typically last 1-2 weeks before needing replacement.

Can I use these in my inflatable hot tub?

Yes, these are perfectly safe and effective for inflatable hot tubs when used in a floating dispenser.

How many tablets do I need for my tub?

As a general rule, use 1-3 tablets per 1000 litres of water, adjusting based on regular testing to maintain 3-5 ppm.

How long does a 1 kg pack last?

50 tablets at 20 g each, around 4-6 months for a typical 1500 L hot tub.

Are they suitable for sensitive skin?

Yes. Bromine forms fewer skin-irritant by-products than chlorine and is the standard choice for sensitive bathers.

Will they work in a salt-water spa?

Use only when the salt cell is offline; bromine and salt chlorination are not run together.

What is the active ingredient?

Bromochlorodimethylhydantoin (BCDMH) at >= 60% available halogen.

Why is bromine better at high temperature?

Bromine remains stable above 38 C while chlorine is destroyed quickly. Hot tubs need a sanitiser that survives the heat.

Do I still need to shock?

Yes, weekly with Non-Chlorine Shock to clear combined bromine and restore active bromine bank.

Open dispenser; dose Bromine Granules to refresh the bank.

Strong bromine smell?

Shock with MPS; ventilate for 30 minutes.

Tablets vanishing too fast?

Close dispenser ports; check water temperature is within range.

Bromine tablets vs chlorine tablets?

Bromine handles heat better and is gentler on skin; chlorine is cheaper but burns off faster at hot tub temperatures.

Bromine tablets vs bromine granules?

Tablets give slow steady release for low-effort care; granules give fast top-ups when bromine has dropped.

Hot Tub Bromine Tablets 20g - Slow Dissolving

Name: Hot Tub Bromine Tablets 20g - Slow Dissolving
Brand: ClearSpa
SKU: ws-3
Availability: InStock
Rating: 4.5 (10 reviews)

Slow-dissolving 20 g bromine tablets for hot tubs and spas. Dropped into a floating dispenser they hold 3-5 ppm bromine for 1-2 weeks per dose, ideal for low-effort weekly maintenance.

Holds free bromine at 3-5 ppm for 1-2 weeks per dose.
Dissolves slowly through a floating dispenser or erosion feeder.
Stays active across pH 7.0-7.8 and temperatures up to 40 C.
Forms fewer skin-irritant by-products than chlorine.
Pairs with Bromine Granules for fast top-ups.