Tideline Filter Pads are ideal for maintaining a clean and healthy environment in freshwater and saltwater aquariums as well as ponds. Heres a summary of their notable features: Versatile Application: Suitable for freshwater, saltwater aquariums, and pond use. 3-Layer Design: The innovative design helps to prevent blockages, ensuring efficient water flow. Biological Filtration: A dense layer provides excellent biological filtration, promoting the growth of beneficial bacteria. Debris Trapping: Effectively traps detritus, excess food, and waste, contributing to cleaner water. Size and Customization: Each pad measures 12" x 10" and can be cut to fit various filter types, including hang-on, canister, internal, wet/dry, and pond filters. With their thick and rigid construction, Tideline Filter Pads are versatile and effective tools for aquarium enthusiasts and professionals, ensuring optimal water quality and fish health. Additional Details ------------------------------ Product description: Tideline Filter Pads are ideal for maintaining a clean and healthy environment in freshwater and saltwater aquariums as well as ponds. Here?s a summary of their notable features: Versatile Application: Suitable for freshwater, saltwater aquariums, and pond use. 3-Layer Design: The innovative design helps to prevent blockages, ensuring efficient water flow. Biological Filtration: A dense layer provides excellent biological filtration, promoting the growth of beneficial bacteria. Debris Trapping: Effectively traps detritus, excess food, and waste, contributing to cleaner water. Size and Customization: Each pad measures 12" x 10" and can be cut to fit various filter types, including hang-on, canister, internal, wet/dry, and pond filters. With their thick and rigid construction, Tideline Filter Pads are versatile and effective tools for aquarium enthusiasts and professionals, ensuring optimal water quality and fish health.