NANO MICRON and MICRON are internal filters for starter kits, turtle kits and small aquariums. They are integrated with an antiwear device and an exclusive water flow control system which allows filtering to be adjusted on the basis of the volume of water in the aquarium. These filters are ready for wall fitting with high-adherence suction cups. They include filter media and with an interchangeable cartridge available separately they allow specific water treatment according to the requirements of the user.