AN AQUACULTURE SYSTEM AND METHODS FOR CIRCULATING AND TREATING FLUID THEREIN

An aquaculture system including, at least one grow-out tank; a fluid treatment system including a fluid treatment device, a recirculation pump and fluid connections to each of said at least one grow-out tanks for circulating fluid from each of the at least one grow-out tanks through the fluid treatment device; and at least one fluid delivering device which is connected to the fluid treatment system for delivering said circulated treated fluid to said at least one grow-out tank, which fluid delivering device includes an outlet which can be provided in a position within the at least one grow-out tank such that the treated fluid delivered out from the outlet will be delivered along a bottom of said at least one grow-out tank wherein the outlet of the at least one fluid delivering device is configured such that it can be rotated in order for delivering the fluid in different directions along the bottom of the grow-out tank, wherein the at least one fluid delivering device is configured for delivering the treated fluid to substantially the whole bottom of said at least one tank at a velocity which is enough for resuspending sedimented particles, wherein said fluid treatment system is connected to and is serving said at least one grow-out tank intermittently with time constraints which are based on cultivation conditions for an aquaculture in said at least one grow-out tank.