Scale Removal, Scale Prevention & Anti-Corrosion Filters
Protect plumbing, geysers, heating elements, appliances and water-treatment equipment with the correct scale and corrosion solution. H2O Warehouse offers true hardness-removal water softeners, compact Siliphos scale-inhibition filters, complete multi-stage systems and pH-correction vessels for corrosive acidic water.
The correct option depends on whether the problem is hardness and limescale, new scale formation, existing deposits, or corrosion caused by low pH. These treatments work differently and should not be treated as interchangeable.
Shop All Scale Treatment Solutions
Browse our combined range of hardness-removal, anti-scale and anti-corrosion products, including complete water softeners, Siliphos cartridges, media, salt, resin and pH-correction systems.
Choose the Correct Treatment Type
Popular Complete Multi-Stage Options
Siliphos Options Available
- 10-inch slimline Siliphos cartridge
- 20-inch slimline Siliphos cartridge
- 10-inch Big Blue refillable Siliphos cartridge
- 20-inch Big Blue refillable Siliphos cartridge
- Siliphos replacement media – 1 kg
- Siliphos replacement media – 20 kg
Which Solution Do You Need?
Hard Water & White Limescale
Choose an appropriately sized water softener where calcium and magnesium hardness must be removed. A hardness test and usage estimate are required for correct resin and regeneration sizing.
Compact Scale Prevention
Choose a Siliphos cartridge where the objective is to inhibit new scale deposits and provide corrosion protection without physically removing hardness minerals.
Acidic or Corrosive Water
Choose a calcite pH-correction vessel where low pH is causing corrosion, metallic taste, pinhole leaks or blue-green staining. Full water chemistry must be checked first.
Existing Heavy Scale
Installed filters normally prevent or reduce future deposits; they do not instantly dissolve established scale. Existing geysers, heat exchangers and pipework may require controlled chemical or mechanical descaling.
Information Required Before Selection
- Total hardness reported as mg/L CaCO₃
- pH, alkalinity and TDS or conductivity
- Iron and manganese levels, particularly for borehole water
- Water source and intended use
- Required service flow in m³/h and daily or monthly consumption
- Pipe size, available pressure and installation space
- For softeners: suitable drain point, electrical supply and salt-storage access
Need Help Choosing the Correct Scale Treatment?
Send us your water analysis, expected water consumption, required flow rate and a description of the scale or corrosion problem. Our team can recommend the most suitable treatment type, capacity and installation sequence.
Important: Product suitability and performance depend on water chemistry, flow, contact time, temperature, installation position and maintenance. Siliphos inhibits scale formation but does not soften water. Calcite corrects low pH but can increase hardness. Water softeners require correct programming, regular salt replenishment and suitable wastewater drainage.
- Choosing a selection results in a full page refresh.