Two main problems associated with fish farming in sea pens located near the coast are algal blooms and oxygen deficiency. Sea Pen Aeration systems (aeration systems deployed inside the net enclosures) can solve both problems at the same time. A compressor is used to blow air into a diffuser ring, whereby the rising bubbles generate an upward flow within the pen that lifts cool, oxygen-rich water from the depths into the upper reaches of the sea pen.
At the surface the water flows outwards, preventing algae and plankton (as well as planktonic stages of sea lice) from entering the sea pen. The rising bubbles also increase the oxygen saturation of the water, thus improving the feed conversion ratio, as well as the overall health of the fish.