The Micron internal Filter for aquariums with a flow rate of 53gph and tank capacities from nanos up to 20 gallons and is fitted with a floating rotor system, 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. The Micron is ready for wall fitting with high-adherence suction cups. The filtering action is carried out by an active carbon filter with zeolite which ensures perfect water cleanliness for at least 30 days. Keeping at least one spare cartridge available is recommended. Internal filter for aquariums & terrariums. for aquariums up to 20 gallons 53gph