This aquarium filter accessory enhances filtration and water clarity by trapping fine particulates in your filter system. Key benefits Clearer water: captures tiny particles that pass through standard media. Easy maintenance: rinse and reinstall; helps keep your filter performing steadily. Reliable performance: compact design that fits inside typical filter housings. Materials and design Made from aquariumsafe, durable materials that resist wear. Lowprofile, compact form that minimizes impact on flow and fit within the filter. Compatibility and sizing Designed to fit most standard internal and hangon filters. Check your filter housing dimensions to ensure a proper fit. How to use Install according to your filter's manual. Rinse before first use; or clean as part of routine maintenance. Use scenarios setup or after water changes: helps speed up clarification of cloudy water. bioload tanks: enhances particulate removal between cleanings. Substrate disturbance: quickly restores water clarity after gravel vacuuming or stirring. This accessory provides a straightforward upgrade to improve filtration efficiency and maintain clearer aquarium water without added complexity.