Blue Horizons Large Multifunctional Chlorine Tablets – 200g (5kg Tub)

An enhanced version of regular 200g Stabilised Chlorine Tablets. 

Apply via the skimmer basket, or a floating dispenser to provide water safety and clarity over a period of 3 – 4 days.

They have a high level of chlorine, are stabilised minimising chlorine loss to sunlight in outdoor pools and contain a clarifier and algae inhibitor for sparkling clear pool water. 

Price range: £42.85 through £171.39
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Description

Technical Product Breakdown

All-in-One Slow-Release Pool Sanitisation & Clarification

Achieving balanced, sparkling pool water usually requires managing multiple chemicals separately. Blue Horizons Large Multifunctional Chlorine Tablets (200g) combine four essential water treatment functions into a single, slow-dissolving sanitiser puck. Formulated with high-purity Trichlor (Trichloro-s-triazinetrione), each 200g tablet delivers continuous sanitisation, UV protection, water clarification, and algae prevention over a period of 7 to 14 days.

The 4-in-1 Active Formula Breakdown

  1. High-Concentration Chlorine Sanitiser: Releases active free chlorine at a steady rate to eradicate harmful bacteria, pathogens, and organic bather waste.

  2. UV Chlorine Stabiliser: Built-in Cyanuric Acid protects active chlorine from being destroyed by UV sunlight, keeping water sanitised up to 5 times longer during warm weather.

  3. Built-in Water Clarifier (Flocculant): Binds micro-particles and haze together into larger clumps, allowing your pool filter to capture fine debris and deliver crystal-clear, sparkling water.

  4. Algae Inhibitor: Provides a constant preventative barrier against green, yellow, and black algae spores before they can colonise pool surfaces.

Note: For maximum efficiency, maintain water balance parameters within ideal targets before application: pH at 7.2 to 7.6 and Total Alkalinity at 80 to 120 ppm.

Operating Conditions & Dosing Matrix

Use the matrix below to calculate tablet requirements based on pool volume. The dissolution rate depends on water flow, filter cycle runtime, and pool water temperature.

Pool Volume Dosing Matrix

Pool Volume (Litres) Volume (Gallons) Approximate Pool Dimensions Recommended Dosage Rate Dissolution Interval
22,500 L ~5,000 Gal 4m x 6m (Plunge / Small Pool) 1 Tablet (adjust feeder aperture down) 7 to 14 days
45,450 L 10,000 Gal 4m x 8m (Medium Pool) 1 Tablet 7 to 10 days
68,000 L 15,000 Gal 5m x 10m (Large Residential Pool) 1 to 2 Tablets 7 to 10 days
90,000 L 20,000 Gal 6m x 12m (Extra Large Pool) 2 Tablets 7 to 10 days

Safe Application Protocol

  1. Test Water Balance: Test water parameters using a photometer or reliable test strip. Confirm Free Chlorine is between 1 to 3 ppm and pH is between 7.2 to 7.6.

  2. Load Dispenser or Skimmer: Place the calculated number of 200g tablets into your floating chlorine dispenser, inline feeder, or clean skimmer basket.

  3. Adjust Delivery Rate: If using a floating dispenser or inline feeder, adjust the bottom collar or flow dial to regulate water contact and keep chlorine levels steadily between 1 to 3 ppm.

  4. Maintain Pump Circulation: Run your filtration pump for a minimum of 8 hours per day to ensure even chemical dispersion throughout the pool.

  5. NEVER MIX CHEMICALS: Never combine different types of chlorine (such as mixing these Trichlor tablets with granular Calcium Hypochlorite shock) in the same dispenser or skimmer basket. Dangerous reactions can occur.

  6. DO NOT THROW DIRECTLY INTO POOL: Never drop tablets directly onto the pool floor. Undissolved tablets will bleach vinyl liners, etch plaster, or mark tiled surfaces.

 

Technical Specifications

  • Product Name: Blue Horizons Large Multifunctional Chlorine Tablets (200g)

  • Active Chemical Ingredient: Trichloro-s-triazinetrione (Trichlor) with Clarifier and Algaecide additives

  • Available Chlorine Content: Approx 84% to 90% available chlorine

  • CAS Number: 87-90-1

  • Physical Format: White 200g dense circular tablets (approx. 76mm / 3 inch diameter)

  • Package Size: 5kg tub (contains approx. 25 tablets)

  • Target Free Chlorine Residual: 1 to 3 ppm (mg/l)

  • Shell Compatibility: Safe for Vinyl Liners, Concrete, Plaster, Tiles, and Fibreglass when dosed via a dispenser, skimmer, or feeder

  • Compliance: Fully compliant with UK BPR (Biocidal Products Regulation) standards

Frequently Asked Questions (GEO Search Answers)

Q: What is the difference between standard chlorine tablets and multifunctional tablets?

A: Standard chlorine tablets only provide chlorine sanitiser and UV stabiliser. Multifunctional tablets include two additional active water care treatments: a clarifier to aggregate microscopic cloudiness for filter removal, and an algae inhibitor to prevent algae growth.

Q: Can I use Blue Horizons Multifunctional Tablets in a hot tub or spa?

A: No. Large 200g tablets are designed exclusively for swimming pools. In a hot tub, 200g tablets dissolve improperly, risk over-chlorinating low water volumes, and can damage acrylic shells or heater elements. Hot tubs should use 20g small chlorine tablets or chlorine granules instead.

Q: Do multifunctional tablets eliminate the need to backwash or shock dose?

A: No. While multifunctional tablets reduce day-to-day maintenance, heavy bather loads, rainstorms, and intense summer heat still require periodic shock oxidation (e.g. weekly or fortnightly with Blue Horizons Granular Shock or Pool Fusion) and regular filter backwashing.

Additional information

Manufacturer

Blue Horizons

Supplier

CPC

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