Replacement Bio Max foam for the Fluval 07 filter.
• Prevents premature clogging extending life of subsequent filter media
• Rippled surface pattern offers up to 30% more area to efficiently trap waste and debris
• Complex foam construction helps maintain even & consistent water flow
• Ideal surface for growth of beneficial, nitrifying bacteria
• Custom fit with no gaps to maximize filtration efficiency
• Convenient 2-pack format
• For use in freshwater and saltwater aquariums