In the winter period, it can often be observed that due to low temperatures, fish are very difficult to breathe, and therefore those owners of ponds at the house where fish is found, transports fish to the room, since in winter the fish does not receive a sufficiently large amount of oxygen For life. But thanks to portable aerators, it is possible to achieve a high effect not only in providing oxygen of fish in ponds, but also almost completely pond will not be icing, which will be also very useful for fish in the pond, since fish will be able to breathe more intensively and survive the winter successfully.