An impeller for use in an aquarium filter pump includes a shaft and a plurality of impeller blades radially extending from the shaft. Each of the impeller blades includes opposite blade faces. A depression is in each of the blade faces and aids in pushing the water. The depression can be a variety of shapes and can have its deepest portion along one of the edges of the blade.

An air-powered filter for an aquarium includes a base component configured to be coupled to a surface of the aquarium, the base component including a suction cup. The air-powered filter also includes a filter component releasably coupled to the base component, the filter component including a filter housing having at least one opening. The air-powered filter also includes a decorative feature coupled to the base component, the decorative feature configured to cover and disguise at least a portion of the air-powered filter.

A distribution device automates and meters distribution of feed in a commercial shrimp production facility utilizing a stacked shallow tank configuration. The device includes an elongated support surface positioned over and extending along an elongated tank having an open top. A shuttle moves along the support surface to move along a length of the tank. A hopper to hold feed is coupled to the shuttle. A spreader is in environmental communication with the hopper to distribute feed from the hopper and a meter is operationally coupled between the hopper and the spreader for controlling an amount of the feed delivered to and distributed by the spreader.

A controllable semi-open mariculture cabin system is provided, including a mariculture cabin, a water inlet mechanism, a filtering mechanism, and a fish outlet pipe. The water inlet mechanism includes a water inlet pipe and a plurality of high-pressure water inlet pipes. The water inlet pipe is located on one side of an upper part of the mariculture cabin. The plurality of high-pressure water inlet pipes are distributed in a circumferential direction of a top of the mariculture cabin. Tail ends of the high-pressure water inlet pipes are connected to jet pipes extending into the mariculture cabin. The filtering mechanism is arranged at the bottom of the mariculture cabin. An outlet end of the filtering mechanism is located in sea water outside. The fish outlet pipe is provided on a cabin wall of the mariculture cabin. A gate valve capable of opening and closing is mounted on the fish outlet pipe.

A controllable semi-open mariculture cabin system is provided, including a mariculture cabin, a water inlet mechanism, a filtering mechanism, and a fish outlet pipe. The water inlet mechanism includes a water inlet pipe and a plurality of high-pressure water inlet pipes. The water inlet pipe is located on one side of an upper part of the mariculture cabin. The plurality of high-pressure water inlet pipes are distributed in a circumferential direction of a top of the mariculture cabin. Tail ends of the high-pressure water inlet pipes are connected to jet pipes extending into the mariculture cabin. The filtering mechanism is arranged at the bottom of the mariculture cabin. An outlet end of the filtering mechanism is located in sea water outside. The fish outlet pipe is provided on a cabin wall of the mariculture cabin. A gate valve capable of opening and closing is mounted on the fish outlet pipe.

Disclosed are livewell systems and methods of operating livewell systems. A livewell system may include a livewell tank having a chamber formed therein, a fill sensor configured to detect a fill level of the chamber, an intake pump configured to selectively convey water into the chamber, and a control unit including a processor and a memory storing instructions. The processor may be configured to execute the instructions to receive a fill signal, determine whether the chamber is filled to a predetermined fill level; and in response to the fill signal and a determination that the chamber is not filled to the predetermined fill level, cause the intake pump to convey water into the chamber.

An aquarium filter and a method of indicating reduced flow through the filter. The aquarium filter includes a first chamber, a second chamber, and a filter cartridge separating the first chamber and the second chamber. A first flow path is defined through the filter cartridge separating the first chamber and the second chamber. The aquarium filter also includes spillway defining a second flow path and an indicator positioned in the second flow path.

The present disclosure provides systems and methods for enhancing production of an aquaculture pond. The systems generally comprise a photo electrolysis array that includes an electrolyzer module and a photovoltaic cell. The electrolyzer module is operable to produce hydrogen and oxygen. A diffuser diffuses the produced oxygen into the aquaculture pond water, thereby increasing the concentration of oxygen in the aquaculture pond.

The present disclosure provides systems and methods for enhancing production of an aquaculture pond. The systems generally comprise a photo electrolysis array that includes an electrolyzer module and a photovoltaic cell. The electrolyzer module is operable to produce hydrogen and oxygen. A diffuser diffuses the produced oxygen into the aquaculture pond water, thereby increasing the concentration of oxygen in the aquaculture pond.

A shipping container that includes a greenhouse mounted above an aqueous tank or tanks. Aquaponics fruits and vegetables grow in greenhouse in vertical and horizontal grow systems, while fish are grown in the tanks. Water flows between all plants and fish with no soil. The system is run by a computer automation system which operates on data obtained by various sensors and control components that include automated control valves, fish feeders, temperature and water flow measurements. The container can be operated from an established grid or can run off-grid with solar or other renewable energy sources. Part of the water needed for the system can be collected from rainfall. All necessary components except for the water, fish and plant seedlings are delivered in the shipping container.