AquaHealth · Water Treatment

3" Stabilized Chlorine Tablets — TCCA 90%

Slow-dissolving 200 g trichlor pucks that hold a steady free-chlorine residual for up to a week per tablet. UV-stabilized, so your chlorine survives the afternoon sun instead of burning off by 3 PM.

Each tablet is compressed trichloroisocyanuric acid (TCCA) at 90% available chlorine — the highest practical concentration in a stabilized solid. The built-in cyanuric acid shields free chlorine from UV degradation, which matters enormously in high-insolation climates where unstabilized chlorine can lose most of its strength in a few hours of direct sun.

Drop a tablet into a floating dispenser, skimmer basket, or erosion feeder and it erodes evenly from the outside in. No daily dosing, no chlorine spikes, no cloudy water from undissolved granules on the floor.

Where it's used

• Swimming pools and spas — residential, hotel, club, and public pools
• Water storage tanks and reservoirs (non-potable) — overhead tanks, underground tanks, fire-water reserves
• Cooling towers and circulating systems — biofilm and algae control
• Industrial process water and effluent disinfection
• Agriculture and aquaculture — pond, trough, and equipment sanitation

Dosing guide

Start with the figures below, then let your test kit decide. Target 1–3 ppm free chlorine, pH 7.2–7.6, and cyanuric acid 30–50 ppm. Heavy bather load, high temperature, rain, and strong sun all increase demand.

Water volume	Tablets per week	Typical placement
Up to 19,000 L (5,000 gal)	1 tablet	Floating dispenser
19,000 – 38,000 L (5–10,000 gal)	1–2 tablets	Floater or skimmer basket
38,000 – 75,000 L (10–20,000 gal)	2–4 tablets	Automatic erosion feeder
Above 75,000 L	Feeder-metered	Inline chlorinator, rate-adjusted

How to use

• Balance pH and alkalinity before introducing tablets.
• Load tablets into a floater, skimmer, or automatic feeder with the pump running.
• Top up when tablets are roughly the size of a coin — don't let the feeder run empty.
• Retest free chlorine and pH at least twice a week and adjust tablet count, not tablet size.

Common questions

How long does one tablet last?

Roughly 5–7 days in a floater at moderate temperature and flow. Faster in hot water, strong circulation, or heavy use. In an erosion feeder you can tune the dissolve rate with the flow-control dial.

Will it affect my pH?

Yes. Trichlor is acidic, so sustained use pulls pH and total alkalinity down over time. Test weekly and correct with sodium bicarbonate or soda ash as needed.

What's the difference between stabilized and unstabilized chlorine?

Stabilized chlorine carries its own cyanuric acid, which shields the free chlorine from UV breakdown. Unstabilized products like calcium hypochlorite act faster but can lose a large share of their strength within hours in direct sunlight. The trade-off: cyanuric acid accumulates, so drain and refill part of the water if it climbs past about 100 ppm.

Can I use these tablets in drinking water?

No. These tablets are formulated for pools, tanks, cooling systems, and industrial water — not for potable use. For drinking water disinfection, ask us about NaDCC-based potable water tablets certified for that application.

Can I switch to these from granular chlorine?

Yes, but never mix the two in the same dispenser or container. Let the existing product fully dissolve, rinse the feeder, then start with tablets.

What's in the drum

Tablets are individually wrapped and packed in UN-approved HDPE drums with a tamper-evident, moisture-sealed lid. Available in 5 kg (25 tablets), 25 kg (125 tablets), and 50 kg (250 tablets). Bulk and private-label packing available on request.

Read the full label and Safety Data Sheet before use. Application rates are starting points only; actual demand varies with temperature, sunlight, circulation, bather load, and source water quality. AquaHealth supplies the Safety Data Sheet and Certificate of Analysis with every consignment.