The invention relates to a device and method for gas-supersaturating fluid, the device comprising:a fluid supply (350) a chamber (300) having a first inlet, a second inlet, and an outlet a pump (340) coupled to receive fluid from the fluid supply and to deliver the fluid to the first inlet of the chamber a gas supply (310) coupled to deliver gas to the second inlet of the chamber, the gas supply maintaining pressure within the chamber at a predetermined level and an atomizer nozzle (320) coupled to the first inlet of the chamber, the atomizer nozzle creating a droplet pattern (330) of the fluid in the gas within the chamber to diffuse the gas into the fluid to create a gas-supersaturated fluid, the gas-supersaturated fluid collecting within the chamber below the atomizer nozzle and being removable from the chamber via the outlet.
