How long does one tablet last?

Around 5-7 days in a typical 30-50 m³ pool with normal bather load and circulation.

Where do I put the tablets?

In the skimmer basket, an automatic feeder or a floating dispenser, never broadcast loose into the pool.

How many tablets for my pool?

Roughly one 200 g tablet per 30-50 m³ per week, adjusted by testing weekly.

How long does a 5 kg pack last?

25 tablets, around 5-6 months of weekly dosing for a 40 m³ family pool.

Can I use these in a hot tub?

No. Hot tubs need 20 g tablets and a sanitiser stable above 38 C; use Bromine Tablets or Chlorine Mini Tablets instead.

Are they safe for vinyl liners?

Yes when fed through a skimmer or feeder; never let a tablet sit on the liner directly or it will bleach the vinyl.

What is the active ingredient?

Trichloroisocyanuric acid (TCCA) at 90% available chlorine, with built-in cyanuric acid stabiliser.

Why does my pH keep dropping?

TCCA is mildly acidic. Expect to dose pH Plus and alkalinity buffer alongside the tablets to hold balance.

What CYA level should I aim for?

30-50 ppm for outdoor pools. Above 80 ppm chlorine becomes locked up and you need to drain down.

Replace tablets, check skimmer flow and shock with cal-hypo as a fast top-up.

Drain 25-50% of pool water and refill; pause TCCA for 4 weeks.

Tablet not dissolving?

Open feeder ports, check temperature, switch to granules if water is cold.

TCCA is slow, stabilised, mildly acidic; cal-hypo is fast, unstabilised and pH-raising. Use TCCA for routine dosing, cal-hypo for shocks.

TCCA vs liquid chlorine?

Tablets are storable and self-feeding; liquid chlorine needs metering pumps and decays in storage. Tablets win for domestic pools.

Pool Chlorine Tablets 200g - Multifunctional Stabilised

Name: Pool Chlorine Tablets 200g - Multifunctional Stabilised
Brand: ClearSpa
SKU: ps-1
Availability: InStock
Rating: 5.0 (6 reviews)

Slow-dissolving 200 g stabilised chlorine tablets for swimming pools. Drop into the skimmer or a feeder to hold 1-3 ppm free chlorine for 5-7 days per dose. Built-in cyanuric acid keeps chlorine UV-stable through the swim season.

Holds free chlorine at 1-3 ppm for 5-7 days per dose.
Built-in cyanuric acid stabilises chlorine against UV burn-off.
Dissolves slowly in skimmer baskets or floating feeders.
Cuts daily dosing labour to a weekly top-up routine.
Pairs with pH Minus to offset the acidic drift TCCA causes over time.