Zanyzap 21 Water Filter Polishing Pads for Fluval FX4 / FX5 / FX6
These premium quality water polishing pads are designed and manufactured to fit the Fluval FX4, FX5 and FX6 filter. These extra thick micro-fine polyester pads capture micro particles as the water passes through. Use these polishing pads when cloudy water occurs or after tank maintenance for crystal clear aquarium water.