Filter hoses in planted aquariums need regular maintenance. With time algae and other deposits are visible on the inside of the hoses, which is perfectly natural but not too pretty. The Chihiros pipes brush helps you clean these hoses and since they are quite strong, you can even push them through the hoses which makes cleaning much easier.
Important! The brushes are only advised to be used for hoses. Cleanin glassware with them can cause damage.