Transport tanks have a lower volume of water, no water exchange, and generally higher fish densities. Changes happen much more rapidly than in culture tanks or raceways. Controlling oxygen automatically can prevent fish loss.

Stress factors during transport do not always cause immediate losses but may lead to poor survival rates later. Fish stress can be reduced with properly maintained DO levels.

An oxygen monitoring system prevents technicians from having to climb up on the tank with a handheld meter while stopped on the side of the road. This is often considered to be one of the more dangerous jobs of a hatchery technician.