Ozone is an essential part of a life-support filtration system for aquaculture facilities. Ozone’s oxidizing capability, short residual times and minimal by-products makes it ideal for disinfection and water purification in aquaculture processes. The application of ozone in the water filtration system serves as a means for disinfection, organic breakdown, color removal and the reduction of nitrogen by oxidation (i.e. ammonia and nitrite ions). Oxygen, necessary for the fish in grow out tanks, is provided as part of the injection of oxygen/ozone gas mixture. Ozone’s fast reactivity, oxidative strength, disinfection power and lack of harmful oxidation by-products plays an important role in life support systems for the aquaculture industry.