A net cage for farming of marine organisms is described, where the net cage is comprised of a main chamber to hold the marine organisms and where the net cage has further water chambers to treat the water before it is circulated back to the main chamber.

Exemplary embodiments relate to a water filter for an aquarium that includes a housing, a cover, a removable first and second body, and an actuator. The housing includes an interior area configured to house filtration cartridges and an opening closable by the cover. The first body is configured to be in operative fluid connection with a water inlet and the second body is configured to be in operative fluid connection with the housing interior area through the cover, and is operatively releasably engageable therewith. The first and second bodies are releasably engageable in fluid tight connection, and each include a valve in operative connection therewith. The actuator is in operative connection with at least one of the valves and operation thereof is operative to simultaneously change each valve between the respective open and closed positions.

The present invention is a new process for preserving the water of an aquatic body as a supplying source for different human activities such as recreation and amusement, food and ornamentation, by the development of a aquatic space formed by a Open water Lake, a Spa Lake, and a Water Depuration Lake that preserves the water mass by biotransformation and mineralization that allow reducing the concentration of carbon, nitrogen and phosphorous, generating clean and transparent water without the use of large amounts of chemicals and complex filtrate systems.

Provided is a water purification device including: at least one base material carrying denitrifying bacteria; a holding part which holds the base material; a water sprinkling mechanism which sprinkles water to be treated onto the base material; and a water drainage mechanism which is arranged on the holding part and drains the water to be treated such that at least a portion of the base material is constantly unexposed to the water to be treated.

Bottom grading apparatuses for aquaculture systems are disclosed herein. An example system includes a vessel filled with water that receives fish, the vessel having a bottom surface with drain; a plenum in fluid communication with the vessel; a multiway valve in fluid communication with the plenum, a mortality pipe, and a grading pipe; and a mortality container in fluid communication with the mortality pipe and the vessel, wherein the fish can re-enter the vessel through the mortality container and deceased fish remain in the mortality container, wherein when the multiway valve is closed to the mortality pipe, the fish will divert through the grading pipe.

An aquatic biofiltration system where invertebrate aquatic filtering organisms in the form of tunicates filter free-floating particulates in a water volume is disclosed. The system provides a habitat for tunicates with at least one residence device (5, 6) adapted to be arranged in a water volume, and a collection system (7) adapted to collect expelled solids from the tunicates. A biofiltration method for filtering particulates from a volume of water is also disclosed.

A filter arrangement for an aquarium is disclosed. The filter arrangement can include a filter housing assembly, a pump assembly, and a transfer tube assembly. In one aspect, the housing assembly and the pump assembly are separately constructed assemblies that are connected to each other via a first dampening member to prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. The filter arrangement can further include a second dampening member connecting the pump assembly with the transfer tube assembly to further prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. A third dampening member can be provided at a location where the transfer tube assembly is supported within the filter housing assembly to further isolate vibration and sound from being transmitted from the pump assembly to the filter housing assembly via the transfer tube assembly.

An aquarium with a wireless power supply function is disclosed. In the aquarium, a base frame is disposed under a water tank, a top box is disposed on the water tank, and the base frame includes a coil box and a coil holder. The coil holder is disposed on the coil box, and an outer diameter of the coil holder is smaller than an inner diameter of the coil box, to form a gap between the coil box and the coil holder to dispose a first coil around the coil box. The first coil can generate electromagnetic induction when being energized. The first coil surrounds an outer side of a bottom of the water tank, and a second coil is disposed around an inner periphery of the top box, so that the first coil can generate electric energy through electromagnetic induction and transfer power to multiple devices.

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.

A pond filter unit and a method for operating a pond filter unit is provided. A control unit controls the operation of the pond filter unit, including the cleaning cycle of the filter. The pond filter unit further includes one or more plugs for connecting one or more auxiliary devices, such as a separate pump, one or more additional pond filter units, illumination means/lamps, air pumps, and/or feed automats. The control unit of the pond filter further controls the one or more auxiliary devices connected to the plugs, such as pumps, air pumps, automatic feeding devices based on input settings for each of the one or more auxiliary devices. The control unit further controls the cleaning cycle for cleaning of the filter in the vessel.