A device for high density culture of fish larvae includes: a nursery tank, a first aerotube, a standing mesh drain pipe, and a dual-drain recirculating water treatment system. The nursery tank is a rounded corner tank or a polygonal tank without dead corners. The first aerotube is disposed around the bottom of the inner wall of the nursery tank. The standing mesh drain pipe is disposed in the center of the bottom of the nursery tank. The dual-drain recirculating water treatment system includes a first water treatment system and a second water treatment system. The first water treatment system and the second water treatment system are symmetrically disposed on both sides of the nursery tank, respectively. The first water treatment system is configured to purify upper layer water of the nursery tank, and the second water treatment system is configured to purify lower layer water of the nursery tank.

A method for degassing carbon dioxide from a stream of water is provided, whereby water is supplied at a predefined volumetric flow to a gas balancing filter, wherein the water in a first step is collected in a basin with a free upper surface and a depth and in a second step is allowed to flow out of the basin through at least one orifice provided beneath the free upper surface and in a third step the water flowing out of the orifice is allowed to free-fall a distance D through a controlled atmosphere and is then collected in a further basin provided beneath the basin. The invention comprises the further steps that the first, second and third steps are repeated two or more times with basins provided consecutively below each other. A gas balancing filter is also provided.

The current invention relates to an artificial intelligence, internet of things (IoT) based water body management system. The water body management system of the invention comprises of an aeration module, a nutrient dispensing module, and a sensor module which monitors and maintains water quality parameters. The artificial intelligence module configured with the sensor module trains the data obtained from the sensors and inputs to the aeration, nutrient dispensing or other modules. The current invention has applications in aquaculture management, management of water bodies like lakes, reservoirs, and ponds.

An energy efficient aquaculture system combining mixed-cell and raceway configurations. The system comprises a raceway tank, a raceway channel, a first water purification subsystem, and a second water purification subsystem. The system may include one or more of a hatching subsystem, a nursery subsystem, a feeding subsystem, a finishing subsystem, and a fish pumping system for transfer of fish between raceway tanks. A method of growing fish for commercial production using the aquaculture system is also provided.

There is provided an inline saturator system and method for gas exchange with an aqueous-phase liquid. The system includes a pressure vessel, configured to receive a first liquid and a first gas from external sources and to discharge a second liquid and a second gas from the pressure vessel, and a gas infusion device situated within the pressure vessel. The gas infusion device is configured to receive the first liquid and first gas, to facilitate gas exchange therebetween, producing the second liquid and the second gas, and to discharge the second liquid and second gas into the pressure vessel. The system further includes a recirculation system configured to direct a portion of liquid within the pressure vessel back into the saturator device, where injection of the redirected liquid into the gas infusion device forces the first liquid into the gas infusion device for the gas exchange.

Provided are compositions, methods, and solutions for generating aqueous glucomannan solutions with hydrogen compositions greater than 100 parts per billion. Said glucomannan solutions have application in nutritional, therapeutic, and energy fields.

A system for transferring marine life within an aquaculture facility including a plurality of segregated storage facilities each containing water for marine life, maintained within a predetermined temperature range and supported at independent ground levels. The storage facilities are successively disposed and structured to contain marine life at different stages of growth. A transfer assembly includes a path of fluid flow interconnecting successive ones of said plurality of storage facilities in fluid communication with one another, wherein at least a majority of a length of said path of fluid flow is disposed beneath the independent ground levels at a predetermined depth, which is sufficient to facilitate maintenance of the path of fluid flow within the predetermined temperature range, via geothermal cooling. The transfer assembly may also connect a holding facility, which may be dimensioned and structured to transfer mature marine life, possibly on an on-demand basis, to the harvesting facility.

An energy-saving paddlewheel aerator is provided. A power supply system of the paddlewheel aerator includes a switching power supply converting main power to direct current, the switching power supply being connected with two terminals of a power mechanism of the paddlewheel aerator and supplying power to the paddlewheel aerator; and a solar power supply module, two ends of the solar power supply module being connected in parallel with a large-capacity capacitor, and two ends of the large-capacity capacitor being connected with the two terminals of the power mechanism of the paddlewheel aerator respectively to supply power to the paddlewheel aerator. A rated output voltage of a solar panel with sufficient power is higher than an output voltage of the switching power supply, and the rated output voltage of the solar panel with insufficient power is lower than the output voltage of the switching power supply.

Techniques and systems for robotic aquaculture are described. In one embodiment, for example, a mariculture system may include an aquatic animal containment system operative to hold a population of aquatic animals, the aquatic animal containment system comprising an enclosed hull having a receptacle configured to receive a mechanical core, the mechanical core configured to store at least one sub-system to implement at least one function of mariculture system, and a position management system operative to maintain the enclosed hull at a depth below a surface of a body of water. Other embodiments are described.

An automatic aquarium system that uses an automatic aquarium siphon bridge comprises a first water tank and a second water tank. The system further comprises a siphon bridge arranged between the first water tank and the second water tank. The system also comprises a pump arranged in one leg of the bridge. The aquarium system also comprises a cross over siphon arranged within the siphon bridge wherein one end of the cross over siphon is connected to an inlet of the pump and the opposite end is arranged in the second water tank. The automatic aquarium system may also comprise an air extraction siphon arranged between a top surface of the bridge and the inlet of the pump. This may allow for clean well aerated water to circulate throughout the automatic aquarium system, i.e., between the first and second tank via the bridge to allow for fish to properly enjoy two tanks and the bridge area therebetween.