FILTERATION
AQUARIUM CARE Filteration (I) Most aquarists are aware of the fact that their aquarium water gradually accumulates potentially harmful substances which eventually poison their fishes. In order to prevent this from happening there is the need for filtration therefore, for our purpose I would define filtration as the removal of unwanted substances from water. Most aquarists use three types: Biological, Mechanical and Chemical amongst which the biological is the most important. Biological filtration is also referred to as under gravel filtration, because the major equipment used (a flat plate of perforated plastic) is placed under the gravel bed hence it is invisible. Unless you are properly equipped, you can’t see the process happening and cannot measure its effect. Yet, this process is the major difference between success and failure, and the aquarist who does not take the time to understand its workings is doomed to watch an endless procession of dying fishes passing t...