This cartridge philtre set by Interpet is a must-have for any fish and aquarium enthusiast. With its high-quality filtration system, it ensures that your aquarium is free from harmful bacteria and debris. The set includes two cartridges that are easy to instal and maintain. The Interpet CF1 cartridge philtre is designed to provide a clear and healthy environment for your fish. It is ideal for use in both freshwater and saltwater aquariums. The cartridges are made using premium materials that are durable and long-lasting. Keep your aquarium clean and healthy with this reliable and efficient philtre set.