What is the ideal free chlorine level?

3-5 ppm for hot tubs and 1-3 ppm for outdoor pools.

How long does one tablet last?

Up to 7 days in a 4500 L tub at standard temperature and bather load.

Do I need a separate stabiliser?

No. TCCA tablets are pre-stabilised with cyanuric acid.

How long does a 1 kg pack last?

50 tablets at 20 g each, about a year for a single 1500 L hot tub.

Can I use them in an inflatable hot tub?

Yes, in a floating dispenser. Never drop tablets onto the vinyl shell.

Are they safe for salt-water systems?

Use only when the salt cell is offline; tablets are normally redundant in salt systems.

What is the active ingredient?

Trichloroisocyanuric acid (TCCA) at approximately 90% available chlorine.

What is cyanuric acid?

A UV stabiliser that protects free chlorine from sun degradation. Required for outdoor use, undesirable indoors.

Can I use them indoors?

Yes, but switch to unstabilised chlorine if you do not need UV protection. Indoor CYA build-up wastes chlorine.

Chlorine drops too fast?

Increase tablet count or shock with a non-stabilised oxidiser; check filter is clean.

Strong chlorine smell?

Combined chlorine high; shock with MPS and ventilate for 30 minutes.

TCCA is acidic; dose pH plus weekly to compensate.

TCCA tablets vs SDIC granules?

TCCA is slow-release and acidic; SDIC is fast-acting and pH-neutral. Tablets for ongoing dosing, granules for top-ups and shocks.

TCCA tablets vs bromine tablets?

TCCA is stabilised chlorine for outdoor use. Bromine is more stable at hot tub temperatures and gentler on bather skin.

Chlorine Mini Tablets

Name: Chlorine Mini Tablets
Brand: ClearSpa
SKU: ws-1
Availability: InStock
Rating: 5.0 (6 reviews)

Slow-release stabilised chlorine for hot tubs and small pools. A 20 g trichlor (TCCA) tablet that holds 3-5 ppm free chlorine for up to a week per dose with cyanuric acid stabilisation.

Holds free chlorine at 3-5 ppm for up to 7 days.
Stabilises against UV burn-off with built-in cyanuric acid.
Dissolves slowly through a floating dispenser or erosion feeder.
Compatible with cartridge filters and circulation pumps.
Designed for tubs and pools without an automatic chlorinator.