Fluval Spec/Evo/Flex 9G Replacement Foam Fluval Spec/Evo/Flex 9G Replacement Foam is a replacement foam filter block for select Fluval Spec, Evo, and Flex aquarium kits, helping trap particles and debris in the rear filter chamber. Replacement Foam for Spec Evo and Flex 9G Provides mechanical filtration by capturing larger debris and particulates. Helps keep filter flow organized through the original rear media chamber. Compatible with Fluval Evo 5 Gallon and Evo 13.5 Gallon aquarium kits. Compatible with Fluval Spec 2.6G, Spec 5G, and Flex 9 Gallon aquarium kits. Useful as a direct replacement when the original foam block is worn or difficult to clean. Spec Evo Flex Foam Details Item number: A1376 UPC: 015561113762 Media type: mechanical foam filter block Use: replacement media for compatible Fluval desktop aquarium kits Official Fluval Filter Media Video Replacing the Foam Filter Block Remove the old foam block, move over compatible media inserts if required, and install the replacement foam in the original filter chamber position. Rinse gently during maintenance to preserve useful biological activity. What’s Included 1 replacement foam filter block