The present disclosure relates to an aquarium cleaner, and provided is the aquarium cleaner comprising: a hollow body including a suction port, a water outlet and a floor material discharge port; a connection part formed at one end of the body and connected to a power-providing means; a rotary shaft, which extends in the direction traversing the longitudinal center in the body, and has a portion exposed from the body so as to be rotated by means of power; a propeller, which is coupled to be linked to the rotary shaft, and transfers fluid toward the water outlet through the suction port as the rotary shaft rotates by means of power; and a floor material filter, which is coupled to the rotary shaft so as to be angularly spaced from the extension direction of the rotary shaft, and is positioned on a fluid transfer path.

The present disclosure relates to an aquarium cleaner, and provided is the aquarium cleaner comprising: a hollow body including a suction port, a water outlet and a floor material discharge port; a connection part formed at one end of the body and connected to a power-providing means; a rotary shaft, which extends in the direction traversing the longitudinal center in the body, and has a portion exposed from the body so as to be rotated by means of power; a propeller, which is coupled to be linked to the rotary shaft, and transfers fluid toward the water outlet through the suction port as the rotary shaft rotates by means of power; and a floor material filter, which is coupled to the rotary shaft so as to be angularly spaced from the extension direction of the rotary shaft, and is positioned on a fluid transfer path.

Aquarium cleaning device and method, wherein the device may comprise a body adapted to be held for the cleaning of an aquarium. The body is configured to receive a barrel member at an end of the body, which defines an opening into the body. The barrel member may be inserted into an aquarium and has a hollow center which permits receipt of water or debris from the aquarium. The barrel member may be adapted to receive a variety of cleaning accessories. The cleaning accessories may be of various shapes such that they permit for the same device to be able to access and clean in and around different areas of the aquarium and/or with improved suction. In addition, at least portion of the barrel and/or an accessory may be flexible to facilitate cleaning of difficult to reach areas of aquarium.

Aquarium cleaning device and method, wherein the device may comprise a body adapted to be held for the cleaning of an aquarium. The body is configured to receive a barrel member at an end of the body, which defines an opening into the body. The barrel member may be inserted into an aquarium and has a hollow center which permits receipt of water or debris from the aquarium. The barrel member may be adapted to receive a variety of cleaning accessories. The cleaning accessories may be of various shapes such that they permit for the same device to be able to access and clean in and around different areas of the aquarium and/or with improved suction. In addition, at least portion of the barrel and/or an accessory may be flexible to facilitate cleaning of difficult to reach areas of aquarium.

A system is provided for automatically removing deceased fish from an aquaculture cage. The system may include an underwater robotic vehicle configured to traverse the aquaculture cage to collect mortalities. The mortalities, once collected, may be brought to a system dock and then removed from the cage.

A system is provided for automatically removing deceased fish from an aquaculture cage. The system may include an underwater robotic vehicle configured to traverse the aquaculture cage to collect mortalities. The mortalities, once collected, may be brought to a system dock and then removed from the cage.

An aquarium substrate cleaning system, including one or more motion-generating elements positioned within or beneath the aquarium substrate and a power and control system to control the activation and intensity of the motion-generation elements. The system allows for automated, hands-off maintenance and cleaning of substrates such as aquarium sandbeds. The motion from the device disrupts and liberates detritus from the substrate, allowing it to be removed by the water column.

An aquarium substrate cleaning system, including one or more motion-generating elements positioned within or beneath the aquarium substrate and a power and control system to control the activation and intensity of the motion-generation elements. The system allows for automated, hands-off maintenance and cleaning of substrates such as aquarium sandbeds. The motion from the device disrupts and liberates detritus from the substrate, allowing it to be removed by the water column.

An industrialized fish and algae farming system with recirculating water and method are provided, and the system includes a fish and algae farming system, a fiber rotary disc filter system, and a magnetic loading flocculation system. In accordance with the fish and algae farming system, the aquaculture of fish and algae in the same space is achieved, the algae can transform CO.sub.2 exhaled by fish and nutrients, polysaccharides, vitamins and lipids, and then release oxygen to rapidly improve the aquaculture water quality. The fiber rotary disc filter system and the magnetic loading flocculation system can effectively remove suspended particles, grease, algae, bacteria, viruses and the like in aquaculture sewage, thus achieving the deep purification of the aquaculture sewage. The purified water quality reaches the aquaculture standards in fishery and can be directly recycled, and the whole system has no sewage discharge.

An industrialized fish and algae farming system with recirculating water and method are provided, and the system includes a fish and algae farming system, a fiber rotary disc filter system, and a magnetic loading flocculation system. In accordance with the fish and algae farming system, the aquaculture of fish and algae in the same space is achieved, the algae can transform CO.sub.2 exhaled by fish and nutrients, polysaccharides, vitamins and lipids, and then release oxygen to rapidly improve the aquaculture water quality. The fiber rotary disc filter system and the magnetic loading flocculation system can effectively remove suspended particles, grease, algae, bacteria, viruses and the like in aquaculture sewage, thus achieving the deep purification of the aquaculture sewage. The purified water quality reaches the aquaculture standards in fishery and can be directly recycled, and the whole system has no sewage discharge.