Good Filter Media For Fish Tank

What is filter media for a fish tank?     Fish tank filter cotton is a seemingly simple thing. Not every fish tank has filter cotton, but most fish tanks have filter cotton. The natural column of the filter cotton is a fish tank cleaner, of course, you can also understand it as a garbage disposal station in the fish tank. Filter media for fish tank is mainly used to separate feces, food residues and mucus on the surface of ornamental fish. It seems commonplace, but have you ever thought about having another stem in the filter?     Fish tank filter materials are divided into two categories: physical filter materials and biochemical filter materials. The physical filter material is responsible for isolating large particles of waste in the water, while the biochemical filter material is responsible for the self-injury of nitrifying bacteria. Filter cotton is naturally a physical filter medium. As a physical water filter carbo…