Stock Take in Progress: 25 February – 2 March 2026.
We remain open and will continue processing orders as normal. Please note that selected items may experience slight dispatch delays during this period. Thank you for your understanding and continued support.


The 20-Inch Big Blue Carbon Block Filter Cartridge – Premium 1000mg/g Range delivers top-tier performance for high-demand residential and commercial water filtration systems. Made from high-density coconut shell activated carbon, this cartridge offers an exceptionally high iodine number of 1000mg/g, ensuring advanced reduction of chlorine, taste, odour, VOCs, pesticides, and other chemical contaminants.
Designed for use in standard 20-inch Big Blue housings, this premium cartridge is ideal for whole-house filtration, reverse osmosis pre-treatment, and light industrial use, offering longer lifespan and higher contaminant capacitythan standard-grade filters.
Ultra-High Iodine Rating – 1000mg/g for enhanced chemical adsorption performance.
Dense Carbon Block Structure ensures effective removal of chlorine, organics, and sediment.
Coconut Shell Activated Carbon – Superior filtration with eco-conscious sourcing.
20” Big Blue Format – Compatible with all standard 20” x 4.5” Big Blue housings.
Improves Taste, Clarity & Safety of drinking, cooking, and bathing water.
Ideal for High-Flow Systems – Perfect for large households, lodges, and small commercial sites.
Filter Type: Carbon Block
Size: 20" x 4.5" (Big Blue Standard Size)
Carbon Material: Coconut Shell Activated Carbon
Iodine Number: 1000mg/g
Micron Rating: 5 Micron (Nominal)
Chlorine Reduction: ≥ 99%
Recommended Flow Rate: 15–20 litres per minute
Max Operating Pressure: 8 bar
Max Temperature: 52°C
Service Life: Up to 6 months (subject to water quality and usage)
Whole-house filtration systems
Rainwater purification setups
Reverse osmosis pre-filtration
Commercial kitchens & beverage stations
Schools, clinics, and guest lodges
Agricultural & rural water systems
1 x 20-Inch Big Blue Premium Carbon Block Filter Cartridge (1000mg/g)
For best performance and extended life, use after a sediment pre-filter.
This filter does not remove bacteria – combine with a UV or Quantum Disinfection™ system for complete protection.
Replace every 6 months or when flow rate drops significantly.
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