Advantages and disadvantages of aerating the aquarium
The aeration of an aquarium with the help of a membrane pump and an air stone primarily circulates the water.
At the moving water surface, the aquarium water absorbs oxygen from the atmosphere and releases CO2 and other gases. The stronger the water movement, the stronger the gas exchange.
Possible benefits:
- In unplanted aquariums, e.g. B. perch tank and rearing tank, with a high stock of fish and little surface movement, the oxygen supply is improved, which may be too low due to a lack of plants. There can be too little oxygen in the water, especially at night. Light ventilation at night increases oxygen levels. If ventilation is only used at night, the CO2 level will build up again in the morning.
- Unevenly heated layers of water are mixed.
- Some species of fish feel really at home in stronger water currents.
Possible disadvantages:
- Toxic substances such as nicotine that may be contained in the supplied air are dissolved in the water.
- The CO2, which is important for the plants, is expelled.
- The resulting noises can be perceived as annoying.
A modern filter also ensures sensible circulation of the water. In addition, the filter keeps the water clean, is quieter and uses less electricity. However, a filter costs a little more. As a rule, the oxygen content in an aquarium is high enough without an additional pump.
For emergencies, e.g. In the event of a lack of oxygen, for example, it is useful to have an aeration system, i.e. a diaphragm pump and an air stone. A diffuser can be used as an alternative to the diaphragm pump and air stone.