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What can be the bio filter?

Desing the bio filter there can be any. So, for example, quite good results can achieve, having placed all ground of an aquarium on the punched plastic plate with apertures, smaller, than the size of particles of a ground. Water in this case should move a pump under a plate which in this case refers to Reverse Under Gravel Filtration. As a result we receive that it is accepted to name English abbreviation RUGF, that is the ground bio filter with a return current of water.
Such way has a number of lacks. For example, the effective height of an aquarium decreases. A number of plants which do not love pro accuracy of roots, it is necessary to place in a pot. Capacity of pumps for such filter should be enough big, differently it can simply be hammered by a dirt. Totally pumps should provide REALLY pro rolling not less than 8-10 volumes of an aquarium through RUGF at an o'clock. Such operating mode is heavy for usual aquarian pump and falling of their productivity in this operating mode is very great. For these purposes it is necessary to use more powerful gushing a pomp. In any case, presence RUGF does not relieve of necessity to have also the filter which will filter mechanical dregs.
All problems with a biofiltration and water treating from mechanical pollution solves the external filter, which else often name canisters because it is very similar to the canister or a bucket with the pump. Such filter has a multi layered filtering material which makes accordingly a mechanical or biological filtration. There is it dearly enough, however it is not necessary to save on it, otherwise, weary with the cheap filter, it is necessary to buy sooner or later also dear filter.
The good bio filter from bad differs very much in many parameters which frequently can be checked up only at long operation. Our rich practical experience allows to recommend production of firm Eheim first of all. For any size of an aquarium and for its any population you can find the corresponding bio filter from Eheim. From manufacturers of inexpensive canisters of filters it is possible to recommend, perhaps, only filters OTTO and RESUN. Except for these manufacturers anybody yet does not make noteworthy canisters filters.
Formation of community nitrification bacteria - long enough process. The more the area of a substratum of the bio filter, the it longer. Usually that the bio filter has left on full capacity, it is required from 2 till 6 months. To accelerate this process it is possible, having taken a part of a substratum from the mature bio filter or having put the new bio filter in a successful aquarium with the adjusted biofiltration. The exhibition-sale gives these services to the clients free of charge at purchase of the bio filter.
Care of the biofilter has the important specificity. Branches of the bio filter in which there is a filtering material for preliminary water treating from mechanical dregs, can be cleared by any convenient aquarium man in the way. As to a substratum with bacteria, its washing should be carried out very cautiously. Is better to lower simply a bag with a substratum in water, to lift from water, having given it to flow down independently and some times to repeat procedure. If as a substratum for bacteria the special sponge is applied, it is not necessary to wash it clean. Is better to lower simply it under water, to compress and allow to be filled with water. To repeat this procedure some times, not trying to achieve crystal-clear water.
The organization of the bio filter directly inside of an aquarium as often it is done in firm aquariums is possible. We believe, that such approach is irrational even for the reason, that this filter on the one hand enough big and should be decorated it, that it is not evident. On the other hand, its opportunities are rather modest, if you plan to hold in an aquarium of large fishes. In this case All of you equally should buy the high-efficiency external filter.