Designed specifically for the Fluval FX4, FX5 and FX6 canister filters, these thick, ultra fine polyester Water Polishing Pads effectively trap micro-particles and debris.
  Key Features:
  
    - Mechanical filter media
 
    - Ideal for use when cloudy water occurs or following general tank maintenance
 
    - Convenient 3-pack format
 
    - Specially designed for Fluval FX4, FX5 and FX6 high performance canister filters
 
    - For freshwater and saltwater environments