Check the listing for details. FLUVAL FX4-FX5-FX6 BIO-FOAM - 3 PACK - A228. Condition: New. Listed at 21.99 USD. FLUVAL FX4-FX5-FX6 BIO-FOAM - 3 PACK The Fluval FX4-FX5-FX6 Bio-Foam is a specific type of filter media designed for use in the Fluval FX4, FX5, and FX6 performance canister filters. It serves as a mechanical filtration media, meaning it is responsible for capturing large particles and debris from the aquarium water. Here are the key features of the Fluval FX4-FX5-FX6 Bio-Foam: Mechanical filter media: The Bio-Foam effectively traps the majority of waste and debris in the aquarium water, preventing it from circulating further in the filtration system.Consistent water flow: The complex foam structure of the Bio-Foam allows for a steady water flow, ensuring efficient filtration while preventing clogging.Beneficial bacteria growth: The foam structure also provides a suitable environment for the growth of beneficialbacteria. These bacteria play a crucial role in the biological filtration process by breaking down harmful substances, such as ammonia and nitrites, into less harmful forms.Custom fit: The Bio-Foam is designed to fit perfectly in the FX4, FX5, and FX6 canister filters, preventing debris bypass and ensuring that all water passes through the filtration media.Biological filtration enhancement: By promoting the growth of beneficial bacteria, the Bio-Foam enhances the overall biological filtration process in the aquarium, leading to better water quality and healthier aquatic life.Convenient 3-pack format: The Bio-Foam is available in a convenient 3-pack format, allowing for easy replacement when needed.Replacement interval: It is recommended to replace the Bio-Foam every 6 months to maintain optimal filtration performance.Suitable for freshwater and saltwater aquariums: The Bio-Foam is designed for use in both freshwater and saltwater aquariums, making it versatile for different types of aquatic setups. Overall, the Fluval FX4-FX5-FX6 Bio-Foam is an essential component of the filtration system in these specific Fluval canister filters. It provides mechanical filtration, promotes beneficial bacteria growth, and contributes to the overall health and clarity of the aquarium water. We will pick best available way to ship Thank you, CountryFishGirl