Filter System in the Aquarium

Fish excrete waste constantly like any other living things as they swim around the water. This waste is a feasible poison to fish thus it is highly essential to discover a way to remove this toxin from the aquarium tank.
The method of removing this excess food, decaying matters, risky chemicals, fish waste products and free floating particles from aquarium water is called filtration. And the tools use is called filter.

Filters for aquariums come in all sorts of shapes, types and sizes, but they perform the same basic function, and that is to circulate the water through some type of straining or cleansing medium at such a rate that the water is kept tidy physically and biologically.

Filters are categorized as 'inside', 'outside' and sub gravel; based on the location around the aquarium, but the location is not as important as the way in which it operates.
The major categories are mechanical, biological and chemical.

Mechanical filters remove undesirable materials from the water by straining and /or the use of absorbent materials. It helps maintaining water clarity doing so.

Biological Filtration : - Unlike mechanical filtration method biological filtration involves bacteria and other microorganisms converting your fish's waste in to less poisonous substances through a method call running. Biological filter will convert your fish's poisonous waste ammonia in to Nitrite, and from nitrite to nitrate, which is comparatively harmless.
This running reduces the necessary maintenance in your aquarium.
Chemical filtration as the name implies can remove toxins and other chemically induced material from your aquarium process with the use of activated carbon. It is necessary to change activated carbon ought to be changed often to have a save community.