A method comprising: (a) providing a multilayer closed conduit aquaculture enclosure; (b) stocking said enclosure with shrimp; and (c) growing with standing biomass of at least 12.5 kg/M3 of enclosure volume. Additional systems and methods are also disclosed. Some disclosed systems are deployed submerged in water such as a the ocean, a pond, a river or an estuary.

Vessel (52) for farming of marine organisms (60), said vessel (52) comprises several tanks (38) with sea water and the marine organisms (60) that shall be farmed, where said tanks (38) comprises a farming net cage (10) that holds the marine organisms (60) and where the tanks (38) are open to the surrounding sea water (62).

Vessel (52) for farming of marine organisms (60), said vessel (52) comprises several tanks (38) with sea water and the marine organisms (60) that shall be farmed, where said tanks (38) comprises a farming net cage (10) that holds the marine organisms (60) and where the tanks (38) are open to the surrounding sea water (62).

An aquatic weed planting plate for an aquarium is disclosed. The aquatic weed planting plate for aquarium includes a plate body and at least four feet. A plurality of planting holes is formed in the plate body at intervals. A plurality of dirt collecting holes is formed around each planting hole. The plate body is provided with fixing devices for fixing aquatic weeds, and each fixing device corresponds to one planting hole. The fixing device includes a fixing sleeve, two clamping members and a luminous ring. The plate body is provided with nets for collecting dirt, each net corresponds to one dirt collecting hole, the lower portion of each net is provided with a connecting tube; a plurality of conveying pipes is also arranged below the plate body, each conveying pipe is communicated with the plurality of connecting tubes, each connecting tube is communicated with the corresponding conveying pipe.

There is a modular, insulated, all-in-one, plug-and-play (MIAP) aquaponics unit that includes a framework having a single base and plural walls; an aquaculture tank defined by a first portion of the single base and a first set of the plural walls; a clarifier tank defined by a second portion of the single base and a second set of the plural walls; a bio-reactor tank defined by a third portion of the single base and a third set of the plural walls; a hydroponics tank defined by a fourth portion of the single base and a fourth set of the plural walls; and piping extending through the plural walls between each two adjacent tanks for allowing water from the aquaculture tank to flow into the clarifier tank and then into the bio-reactor tank and then into the hydroponics tank and back to the aquaculture tank.

There is a modular, insulated, all-in-one, plug-and-play (MIAP) aquaponics unit that includes a framework having a single base and plural walls; an aquaculture tank defined by a first portion of the single base and a first set of the plural walls; a clarifier tank defined by a second portion of the single base and a second set of the plural walls; a bio-reactor tank defined by a third portion of the single base and a third set of the plural walls; a hydroponics tank defined by a fourth portion of the single base and a fourth set of the plural walls; and piping extending through the plural walls between each two adjacent tanks for allowing water from the aquaculture tank to flow into the clarifier tank and then into the bio-reactor tank and then into the hydroponics tank and back to the aquaculture tank.

[Problem] To provide an enclosure that can be easily cleaned, [Solution] A fish-breeding enclosure including: a frame 3 constituting the sides of a cuboid; a first net 11 covering a right side surface 5, a bottom surface 7, and a left side surface 9 of the frame 3; a first net feeder 19 for feeding the first net 11 and a second net 17 that covers a front surface 13, the bottom surface 7, and a rear surface 15 of the frame 3; and a second net feeder 21 for feeding the second net 17. When the first net 11 or the second net 17 is renewed. the first net 11 or the second net 17 is drawn out from the first net feeder 19 or the second net feeder 21, respectively.

A water change system includes an elongate tube and a spout configured to be coupled to the elongate tube. The spout includes a first opening and a second opening spaced from the first opening. The spout is rotatable between a first position to permit water to enter the second opening and pass out of the first opening, and a second position to inhibit water from entering the second opening.

A water change system includes an elongate tube and a spout configured to be coupled to the elongate tube. The spout includes a first opening and a second opening spaced from the first opening. The spout is rotatable between a first position to permit water to enter the second opening and pass out of the first opening, and a second position to inhibit water from entering the second opening.

Method for air drying a fouled net portion of a net comprising the fouled net portion and a clean net portion in a circular sea pen. The method includes the steps of: a) fastening lifting posts to the pen on a drying side; b) attaching slidingly internal ropes to the net; c) fitting winches to the lifting posts on a drying side; d) connecting an energy source to the winches; e) releasing a suitable part of a clean net portion from a handrail; f) fastening the internal rope to a winch; g) bringing a part of the fouled net portion into the air by pulling the internal rope with the winch; h) fastening a part of the fouled net portion to the handrail; and i) repeating steps e)-h) until the complete fouled net portion is lifted into the air. The invention regards also lifting posts to carry out the method.