Check the listing for details. FLUVAL BETTA DIFFUSION CHAMBER PAD - 4 PACK. Condition: New. Listed at 9.99 USD. FLUVAL BETTA DIFFUSION CHAMBER PAD - 4 PACK The Fluval Betta Diffusion Chamber Pad is a specialized filter media designed for use with the Fluval Betta Premium Aquarium Kit. It serves as a 2-in-1 mechanical media that performs water diffusion and polishing during the final stage of filtration. Here are the features of the Fluval Betta Diffusion Chamber Pad: Mechanical filter media: The pad acts as a mechanical filter to trap debris and particles from the water, helping to maintain water clarity and cleanliness in your aquarium. Designed for the Betta Premium Aquarium Kit: The Diffusion Chamber Pad is specifically created to be used with the Betta Premium Aquarium Kit, which has a capacity of 2.6 US gallons or 10 liters. It is tailored to fit seamlessly within the Diffusion Chamber of the kit, ensuring there is no water bypass. 2-in-1 water diffuser and polisher: The pad not only diffuses the water, but it also acts as a polisher. It helps to improve water quality by effectively removing impurities, resulting in cleaner and healthier water for your betta fish. Monthly replacement: For optimal performance, it is recommended to replace the Diffusion Chamber Pad on a monthly basis. This ensures that it continues to effectively filter and polish the water in your aquarium. Convenient 4-pack format: The Fluval Betta Diffusion Chamber Pad is available in a pack of four, providing you with multiple replacements to last for several months.