Chlorine Tablets MINI 20g – 3kg (150 Tablets)
For Hot Tubs & Swimming Pools
The MINI Chlorine Tablets 20g – 3kg are high-performance multiplex chlorine tablets designed for hot tubs, inflatable spas, and small to medium swimming pools. These slow-dissolving tablets provide long-lasting disinfection, helping keep water clean, clear, and hygienic with minimal effort.
Ideal for use in floating dispensers, skimmers, or automatic chlorine feeders.  
✅ Key Benefits
* Slow-dissolving 20g mini chlorine tablets
* Suitable for hot tubs & swimming pools
* Controls bacteria, viruses & fungi
* Helps prevent cloudy water
* Contains chlorine stabiliser & flocculant
* Reduces chlorine smell above the water
* Reliable weekly dosing
* Long-lasting chlorine protection
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Product Information
* Tablet Size: 20g (Mini)
* Pack Size: 3kg
* Quantity: 150 tablets
* Chlorine Type: Multiplex / Tri-Chlor
* Available Chlorine: Approx. 90%
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How the Tablets Work
MASTERsil Multiplex Mini Chlorine Tablets dissolve gradually over 3–7 days depending on:
* Water temperature
* Water circulation
* Pool or hot tub size
Each tablet:
* Disinfects water by killing bacteria, viruses and fungi
* Stabilises chlorine levels
* Flocculates fine particles
* Helps maintain sparkling clear water
✔ Starts working immediately
✔ Long-lasting chlorine release
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Dosage Guide
Hot Tubs
4 Person Hot Tub (Approx. 800 Litres)
* 2 tablets every 7 days
6 Person Hot Tub (Approx. 1000 Litres)
* 3 tablets every 7 days
Swimming Pools
4,500 Litres
* 3–4 tablets every 7–10 days
7,500 Litres
* 5–6 tablets every 7–10 days
💡 Designed for 20g floating chlorine dispensers.
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How to Use
1. Place tablets into a floating dispenser, skimmer or automatic chlorine feeder.
2. Adjust the dispenser opening to control chlorine release.
3. Allow tablets to dissolve naturally.
4. Test chlorine and pH levels regularly and adjust as required.
❌ Never place tablets directly into the hot tub or swimming pool as concentrated chlorine may bleach or damage surfaces.
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⚠️ Important Safety Information
Read before opening the container.
* Do not sniff or inhale the tablets or any fumes released when opening the container.
* Always open the container outdoors or in a well-ventilated area.
* Open the lid carefully and keep your face away from the opening.
* Avoid breathing dust or vapours.
* Avoid contact with eyes, skin and clothing.
* Wear suitable gloves when handling tablets if you have sensitive skin.
* Never mix chlorine tablets with any other pool or spa chemicals.
* Never add water into the container.
* Keep the lid tightly closed immediately after use.
* Store upright in the original container in a cool, dry, well-ventilated place away from direct sunlight and heat.
* Keep out of reach of children and pets.
* Use only in a floating dispenser, skimmer or automatic feeder.
* Always wash hands thoroughly after handling.
* If chlorine fumes are inhaled and irritation persists, move to fresh air immediately and seek medical advice.
* Always read the label before use and use biocides safely.
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Suitable For
✔ Hot tubs
✔ Lay-Z-Spa®
✔ Inflatable spas
✔ Swimming pools
✔ Floating dispensers for 20g tablets
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Package Contents
3kg
150 × 20g MINI Multiplex Chlorine Tablets
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Frequently Asked Questions
How many tablets should I put in the floating dispenser?
Most floating dispensers hold up to 7 mini tablets, however we recommend only filling with 2–3 tablets at a time for more controlled chlorine release.
Recommended Dosage
4 Person Hot Tub (800L)
2 tablets every 7 days
6 Person Hot Tub (1000L)
3 tablets every 7 days
4,500L Swimming Pool
3–4 tablets every 7–10 days
7,500L Swimming Pool
5–6 tablets every 7–10 days
Can I place the tablets directly into the water?
No. Always use a floating dispenser, skimmer or automatic feeder. Direct contact with the shell or liner may cause bleaching, staining or permanent damage.
Why do I notice a strong chlorine smell when opening the container?
These tablets contain highly concentrated chlorine. When opening the container for the first time, a small amount of chlorine vapour may be released. Open the container in a well-ventilated area, keep your face away from the opening, and never intentionally inhale the fumes. This is why the lid should always be opened carefully and closed immediately after removing the required tablets.