The right oxygen level is essential for the fish to be well. We provide application-adapted equipment that ensures optimal production and addition of oxygen to the water. Oxygen production occurs through the separation of the oxygen molecule from the air we surround ourselves with. The best known methods for this are PSA (pressure swing adsorption), where the air is compressed and pressure is worked on at separation, and VSA (vacuum swing adsorption), where the air is sucked through at separation and then increases the pressure on the oxygen after the separation has been carried out. The combination of sensory monitoring and automation ensures good regulation of oxygen production and oxygen addition.