Specially designed for Fluval FX4, FX5 and FX6 high-performance external filters, Bio-Foam + foam blocks work extra hard by acting as an effective filter medium for both mechanical and biological filtration.
Key Features:
- Provide mechanical and biological filtration;
- Include a large porous surface area that supports the expansive proliferation of beneficial (nitrifying) bacteria;
- Effectively trap small particles and debris, especially those not retained by the foam during the first filtration stage;
- Are custom-fitted specifically for FX series filters to increase filtration efficiency;
- Help create a healthy aquatic environment and ideal water conditions;
- Should be rinsed every 3 months;
- Should be replaced every 6 months;
- Are available in a convenient pack of 2;
- Are suitable for both freshwater and saltwater aquariums.
