Where do all those pesky particles and debris go? Into the Fluval Flex Foam Filter Block, of course! This foam block provides crucial stage 1 mechanical filtration, meaning it traps all those big baddies before they wreak havoc on your aquarium. Plus, it's specifically designed for use with the Fluval Flex 15 US gal / 57 L Aquarium, so you know it'll fit like a glove.
- Traps large particles and debris like a boss
- Specifically designed for the Fluval Flex 15 US gal / 57 L Aquarium
- Provides critical stage 1 mechanical filtration
- Keeps your aquarium looking sharp and clean
- No more worrying about harmful debris lurking in your fish's home