The invention relates to a method for controlling a concentration of dissolved oxygen in a volume (V) of water (W), wherein a device (1) for dissolving oxygen in water (W) is submerged in said volume (V) of water, wherein oxygen is injected by the device (1) with an adjustable flow rate into a main water stream (W′) sucked into a housing (100) of the device (1), and wherein the oxygen enriched main water stream (W′) is discharged by the device (1) out of the housing (100) of the device (1) into said volume (V) of water (W), and wherein a current concentration of oxygen dissolved in the sucked main water stream (W′) is measured with an oxygen probe (6) that is integrated into the housing (100) of the device (1), wherein said current concentration of dissolved oxygen is transmitted in a wireless fashion to a hand-held device (9) of an operator, and wherein the flow rate of the injected oxygen is controlled such that the measured current concentration of dissolved oxygen approaches a pre-defined reference value.

A chemical precursor container is disclosed. The container includes a vessel and a lid that define an interior volume, an inlet conduit, an outlet conduit, and a flow distributor positioned inside the vessel and in fluid flow communication with the inlet conduit. The flow distributor has an annular shape and includes a distributor floor having a plurality of apertures formed therein for expelling carrier gas therethrough. The flow distributor includes an inner annular wall that defines a porthole in the flow distributor that allows fluid to pass through the flow distributor from the interior volume of the vessel to the outlet conduit.

A mort trap assembly includes an upper ramp with a top end, a first bottom end, and an outer edge that is fixedly attached to an inner edge of a slide. A retaining chamber is located below the upper ramp and includes a first entry port located below the first bottom end of the upper ramp. A lower ramp has a top end spaced away from the upper ramp, and a first bottom end located at a bottom of the first entry port of the retaining chamber, and a purge pipe fluidly connected to the retaining chamber. The upper ramp is configured to receive morts from the slide, and the lower ramp is configured to receive the morts from the upper ramp and to direct the received morts into the first entry port.

An apparatus for connecting air circulation systems in a container holding fish and the like is disclosed. The apparatus includes an elongated member. The elongated member includes a threaded portion. The threaded portion connects to a wall of a container. The apparatus encompasses a flange extending from the elongated member. The elongated member includes at least two chambers or ports for connecting air circulation systems. The second chamber connects to a bubbler tube for drawing positive airflow from an air pump into the container. The first chamber connects to a suction tube and pushes out the positive airflow out of the container to ensure that no pressure is retained inside of the container.

The present invention relates to a method of raising fish in a recirculated aquaculture system which includes a fish holding unit in fluid communication with a water supply, the fish holding unit containing a volume of water defining a water depth, and having an osmotic concentration, an oxygen concentration, a temperature, and a pH. The method includes providing a flow of non-recirculated water to the water supply, the non-recirculated water being different from the water in the fish holding unit with respect to the osmotic concentration, the oxygen concentration, the CO2 concentration, the N2 concentration, the NH4+ concentration, the temperature and/or the pH, providing feed pellets, adding the feed pellets to the non-recirculated water and hydraulically transporting the feed pellets to the fish holding unit. The invention also relates to a RAS facility.

A method (110) for monitoring at least one aquaculture pond (112) is proposed. The method (110) comprises: a) monitoring at least one aerial parameter of use of the at least one aquaculture pond (112); b) determining a temporal development of the aerial parameter of use; and c) determining an intensity of use of the aquaculture pond (112) by using the temporal development of the aerial parameter of use.

Bio-filter unit (1) intended for a fish farming system, said bio-filter unit (1) comprising a container (2) with a filter media (3) and an inner architecture, said inner architecture comprising at least one vertical tube (5) having an open input end (6) and an open output end (7), wherein the bio-filter unit (1) is connected to a pump (8) enabling pumping liquid and filter media (3) from a bottom (9) of the container (2) against a top (10) of the container (2) through said at least one vertical tube (5), wherein an upper plate (15) is arranged inclined downwards from and around the open output end (7) of the at least one vertical tube (5) and ends at a distance from a wall (13) of the container, wherein the upper plate (15) Is perforated and wherein a regeneration water outflow (16) is arranged under the upper plate (15).

There is provided processes and uses of an inline saturator for maintaining fish in a cage in an open body of water, the process comprising: restricting movement of water into and out of a part of the cage and forming a portion of water within the part of the cage. The process also includes injecting oxygenated water produced by an inline saturator into the portion of water to raise a dissolved oxygen level and to lower a dissolved nitrogen gas level therein. A treatment process is also provided that includes the steps noted above and further including introducing a medicinal substance into the oxygenated water or the portion of the body of water.

A fully air-powered, n-way redundant aquaponic system for integrated cultivation of various fish, plant, and mushroom species, off-grid, with each grow bed including a respective DC air pump, solar panel, and battery to ensure self-sufficiency, redundancy, and enhanced resilience. Each mushroom grow bed also includes an evaporative cooling system for year-round mushroom production.

An aquaculture system (10) comprising growing modules (GM) and liquid treatment modules (LTM). Each growing module is associated via a network of pipes (101, 201, 202) with a respective liquid treatment module to form a pair (161, 162), wherein if liquid flow through a given pair (161, 162) is stopped and left to settle, liquid within the given pair (161, 162) is arranged to balance out to the same level.