The utility model is aimed at improving the efficiency of the plant. This is achieved in that the installation of a closed-loop water supply, comprising a treatment plant, fish tanks or trays, oxygenator, thermoregulator, a centrifugal pump and settling tank, the treatment plant consists of a water head tank, submerged biofilters and aerator-flow-, wherein the aerator-flow- is positioned so that created them, the flow is directed to the front transverse wall of the tank, at a meeting at which it breaks up, gets an extra portion of oxygen, changes the direction of movement on the contrary, generates in the tub reciprocating motion of the same small volume of water from the aerator-flow-to the front transverse wall, and from there to the rear wall and back, forms a tank eddy over oxygenated water, increases the contact time of the air bubbles with water increases the efficiency of oxygen use, the water removed iron hydroxide, free carbon dioxide, hydrogen sulfide, and mixed sludge mixture mineralized dissolved organic substances. This is achieved and those that water from a water tank by gravity enters oksngenator, THEREOF fish tanks and settling tank, from which it is pumped into the water tank, and in that the submersible Biobags arranged along the walls in the eddy flow of water head tank saturated oxygenated water. The utility model can also be used for rearing fish seed for cultivation of commercial fish and store it in a living form at the gradual implementation.Полезная модель направлена на повышение эффективности работы установки. Это достигается тем, что в установке с замкнутым циклом водообеспечения, включающем водоочистное сооружение, рыбоводные бассейны или лотки, оксигенатор, терморегулятор, центробежный насос и бак-отстойник, очистное сооружение состоит из водонапорного бака, погружных биофильтров и аэратора-потокообразователя, причем аэратор-потокообразователь расположен так, что, создаваемый им, поток направлен на переднюю поперечную стенку бака, при в
