An actuated aquarium decoration system is placed within an aquarium in order to provide an aesthetic appeal to onlookers of the aquarium. The actuated aquarium decoration system includes an aquarium decoration, an actuation mechanism, and a control system. The aquarium decoration is an object placed into the aquarium to provides a theme or habitat within the aquarium. The actuation mechanism engages an accenting feature of the aquarium decoration in order to provide motion or character to the aquarium decoration. The control system the duration, intensity, and frequency of the accenting feature through managing the output of the actuation mechanism.

System for detecting the level of discomfort of aquatic animals during experimental studies, with a water tank, a reference electrode placed at one of the sides of the tank, at least one recording electrode placed at another side of the tank, a bio amplifier for amplifying a received bio-signal at the recording electrode, a microprocessor for treating the signals and a low-pass filter for filtering the signals received. The system can provide a precise, quantifiable and specific indication of the level of stress/wellbeing of aquatic animals in normal living conditions as well as in experimental conditions without interfering with the animals' life.

System for detecting the level of discomfort of aquatic animals during experimental studies, with a water tank, a reference electrode placed at one of the sides of the tank, at least one recording electrode placed at another side of the tank, a bio amplifier for amplifying a received bio-signal at the recording electrode, a microprocessor for treating the signals and a low-pass filter for filtering the signals received. The system can provide a precise, quantifiable and specific indication of the level of stress/wellbeing of aquatic animals in normal living conditions as well as in experimental conditions without interfering with the animals' life.

An aeration fitting for an aquarium including a hollow outer fitting having an interior channel, a cylindrical back portion, a cylindrical front portion having a threaded outer surface, a tapered cylindrical middle portion, and a frontwardly flared outer lip. A floating ball is disposed within the interior channel of the outer fitting. A hollow inner fitting has an inner channel, a cylindrical posterior portion, a cylindrical anterior portion having a threaded inner surface, a tapered cylindrical central portion, and a frontwardly flared inner lip. A spring is disposed within the inner channel of the inner fitting. Each of the back portion of the outer fitting and the posterior portion of the inner fitting is connectable to an air hose, and the threaded outer surface of the front portion is selectively engageable with the threaded inner surface of the anterior portion within an aperture in a wall of an aquarium.

An aquaponic system includes a frame, an aquarium located at a lower portion of the frame and provided with a motor, a plurality of cultivating tanks arranged on the frame and having two opposite sides provided with a plurality of inlet tanks and a plurality of outlet tanks, and a strainer unit mounted on the frame. Each of the outlet tanks is connected with a lower one of the inlet tanks. The strainer unit includes a water outlet port connected with the water inlet pipe, a water inlet port connected with a water feeding pipe, two hollow clamping plates located between the water outlet port and the water inlet port, a filtering sponge clamped between the two clamping plates, a fertilizer ferment chamber located under the water inlet port, and a drain pipe connected with the fertilizer ferment chamber.

An aquaponic system includes a frame, an aquarium located at a lower portion of the frame and provided with a motor, a plurality of cultivating tanks arranged on the frame and having two opposite sides provided with a plurality of inlet tanks and a plurality of outlet tanks, and a strainer unit mounted on the frame. Each of the outlet tanks is connected with a lower one of the inlet tanks. The strainer unit includes a water outlet port connected with the water inlet pipe, a water inlet port connected with a water feeding pipe, two hollow clamping plates located between the water outlet port and the water inlet port, a filtering sponge clamped between the two clamping plates, a fertilizer ferment chamber located under the water inlet port, and a drain pipe connected with the fertilizer ferment chamber.

A photobioreactor device for growing photosynthetic organisms, organisms that feed on photosynthetic organisms and hydroponics is disclosed. The device may include a lighting system integrated around the circumference of the device. In embodiments, a cap configured to seal the container has ports configured to permit passage of fluid out of or into a container without removing the cap. In some embodiments, organisms are grown in a disposable bag secured between the cap and the container.

An overflow system is disclosed for use with a tank having a side wall. The overflow system includes an overflow device having a front wall, a back wall, a first sidewall and a second sidewall all secured to a bottom wall and extending upward therefrom to create a chamber having an open top. The front wall, back wall and first and second sidewalls have a plurality of slots formed therethrough. The overflow device is positioned in the tank such that a portion of the plurality of slots is disposed below the fluid line of the tank so as to receive fluid from the tank into the chamber. The bottom wall has an enlarged aperture formed therethrough. The overflow system also includes a first aperture formed through the sidewall of the tank. The first aperture is positioned below the bottom wall of the overflow device. An attachment mechanism attaches the bottom wall of the overflow device to an inside surface of the sidewall of the tank. The attachment means passes through the first aperture.

A system and method of sustainable aquaponics that vertically integrates unique aquaponic system designs with alternative aquaculture fish feed sources, fingerling production methods, alternative aquaculture/farmed fish grow out models, and green energy sources that yield organic produce in the form of fruits and vegetables. A raceway system serves as the hub for grow-out throughout the warm and cold months. During the summer months, fish can be spawned and fed for steady growth, while during the winter months, the fish continue to grow at slower quite acceptable growth rates. Plants like legal (licensed) cannabis for medical use can be grown in plant areas near the raceways with very high yields. The system may also be used to reclaim gray water using the biology of the system to purify it for agricultural use.

A sorting device for live fish includes: an upwardly open water tank; and a vertical grid unit connected to an inside of the water tank via a circumferential sealing element, dividing the water tank into two separate regions, the vertical grid unit having a plurality of slit openings which are delimited by horizontal and vertical webs and which are adaptable in shape and size to the fish to be sorted and are closeable. The grid unit includes at least one carrier plate and at least one adjustment plate having an identical design and arrangement of the slit openings and of the horizontal and vertical webs. The at least one carrier plate divides the water tank into the two regions and the adjustment plate is displaceably arranged on the at least one carrier plate, and depending on a position of the adjustment plate, the slit openings are covered.