Bio-Foam filter foam blocks for Fluval 406 and 407 filters, 2-pack

Bio-Foam filter blocks, specially designed for Fluval 406 and 407 high-performance external filters, ensure effective mechanical filtration by trapping large particles and debris.

Key Features:

• Provide mechanical filtration;
• Effectively trap most waste and debris;
• Feature a complex foam structure that maintains uniform water flow and naturally promotes the growth of beneficial bacteria;
• Are custom cut to prevent debris bypass;
• Enhance the biological filtration process;
• Are available in a convenient 2-pack;
• Should be replaced every 6 months;
• Are suitable for both freshwater and saltwater aquariums.