Land & Water 20" x 4.5" 3-Stage Water Filter Replacement Hard Water (Anti-Scale) Kit

Hard water can wreak havoc on your plumbing, appliances, and water quality—but our Land & Water 3-Stage Replacement Kit is purpose-built to stop scale in its tracks. This high-performance filter set is designed for use in standard 20" x 4.5" whole house systems and provides comprehensive protection by addressing the three most common water quality concerns in hard water areas: sediment, chlorine, and mineral scale.

Whether you’re using mains, bore, or rainwater, this replacement kit improves water clarity, taste, and appliance lifespan. It’s an ideal solution for homeowners seeking to reduce maintenance, extend the life of their hot water systems and dishwashers, and enjoy better quality water at every tap.

Each cartridge in this kit has been carefully selected to work in synergy—providing progressive filtration from coarse particles to fine contaminants, and finally to calcium scale inhibition. From high-flow households to rural properties, this is the go-to choice for efficient, eco-friendly, and cost-effective filtration.

WHATS INCLUDED

• Stage 1 – 5 Micron Grooved Polyspun Sediment Filter
  Features a multi-layer density profile and grooved surface to trap dirt, rust, sand, and silt more efficiently than standard filters. Its dual-gradient design increases surface area, improves flow, and extends filter life.
• Stage 2 – 5 Micron Carbon Block Filter Cartridge
  Constructed from food-grade activated carbon with a precision-moulded block and radial flow design. Effectively reduces chlorine, taste, odour, and organic compounds. Features a positive silicon washer for a superior seal and leak-free performance.
• Stage 3 – 5 Micron Anti-Scale Carbon Block Cartridge
  Infused with a proprietary anti-scaling formula that binds calcium ions to reduce scale build-up. Made from natural coconut shell carbon for sustainable, chemical-free filtration with excellent chlorine reduction and structural durability.

BENEFITS

• Designed for hard water environments with high calcium content
• Compatible with all 20" x 4.5" Big Blue housings
• Eco-conscious materials: food-grade, chemical-free, and recyclable
• Helps protect hot water systems, appliances, and plumbing
• Individually wrapped cartridges for hygiene and storage longevity

Recommended Replacement: Every 6–12 months depending on water quality and usage.