Comparing different types of aquarium water filters
Sponge aquarium filters are more effective than under-gravel filters.
Aquarium water filtration
All fish aquariums will require some kind of filtration system to maintain the quality of the water inside the fish tank. This is because the fishes continuously produce waste inside the water. The filter will help remove the dirt particles, ammonia and nitrites from the water. There are 3 common classes of filters for aquariums – biological, mechanical and chemical.
Biological filtration involves growing some useful bacteria in the filter. The bacteria will help to convert the ammonia in the water into nitrites, which is safer. Another group of bacteria will later convert the nitrites into nitrates, which are even less harmful. The ammonia in the water is produced by the fishes’ gills, urine and other decaying organic matter in the water.
Mechanical filtration helps to remove waste particles by pumping the water through a porous material or sponge. The dirt particles will get trapped in the filter. This filter will require regular cleaning and replacement of the sponge.
Chemical filtration involves passing the water through a carbon filter in order to remove the materials that are dissolved in the water. Odors, ammonia and some toxic metals can be removed by this process.
Basic safety requirements