A note on oxygen supply in RAS: The effect of water temperature

► Steady-state RAS models and data from actual sea-bream installations are used. ► Feed and oxygen required to grow fish to a certain size are independent of temperature. ► Supply by aeration of oxygen is limited by its required concentration in the water. ► Optimal air discharge of an airlift is independent of temperature or of gas (O2, CO2). ► Pure oxygen has advantage over airlifts for oxygen supply at high temperatures.