Method and apparatus for preventing the accumulation of via maes strength ammonia amounts in the water of an aquarium casing for aquatic animal

摘要

In the disclosed aquarium system, the aquarium water is purified in a biological/mechanical external filtration means which can also include chemical adsorption elements, if desired. The filtration means typically comprises (a) a pre-filtration zone, containing a relatively "coarse" filter element (e.g. with a pore size greater than 100 microns), and (b) a parallel flow zone containing a "fine" filter element (e.g. with a pore size less than 100 microns) and at least one cultured filter element. The culture of the cultured filtered element typically contains nitrifying bacteria, which help keep the free ammonia concentration in the aquarium system at a low, nontoxic level or even negligible level. The "fine" filter element in parallel with the cultured filter element permits high flow rates through the system and removes fine detritus. Thus, the parallel flow zone permits rapid and efficient biological/mechanical (or, if desired, biological/mechanical/chemical) filtration coupled with low fluid flow resistance. The "coarse" filter in the pre-filtration zone removes coarse detritus. When a culture forms in the detritus trapped in the "coarse" filter, the resulting cultured filter is useful as a biological element in the parallel flow zone of the same (or different) filtration means.