A stand for a vivarium has a side wall with a cutout and at least one first magnet closure element arranged adjacent to the cutout. At least one cover is provided that is to be inserted into the cutout and at least partially covers the cutout in an installed position of the at least one cover in the cutout. The at least one cover has at least one second magnet closure element that in the installed position is arranged so as to correspond with the at least one first magnet closure element so that the at least one cover is secured in the cutout exclusively by magnetic forces interacting between the at least one first magnet closure element and the at least one second magnet closure element in the installed position.

An integrated coral cultivation system includes a water tank unit having at least one aquaculture tank configured to contain corals, a water supply unit for supplying aquaculture water to the water tank unit, a drain unit for discharging the aquaculture water in the water supply unit and the aquaculture tank to the outside, an air supply unit for supplying air to the water tank unit, a temperature adjustment unit for adjusting the temperature of the aquaculture water in the water tank unit, a light unit for providing lighting to the water tank unit, and a power source unit for supplying power to the water supply unit, the air supply unit, the temperature adjustment unit and the light unit.

This disclosure pertains to modular, moveable light weight structures, i.e., grow towers, including supporting tubing and pumps, used for a hybrid aeroponic and aquaponic growth method of plants and aquaponic growth of animals such as fish wherein the each of the plants and animals are balanced in quantity and produce nutrients that support the growth of the other, i.e., plants and animals. The disclosure also includes an array of sensors, software utilizing artificial intelligence and a CPU for monitoring, controlling and facilitating the growth. The structure and methods utilize and maintain a substantially equilibrium growing conditions requiring minimum intervention. The structure and method also utilizes monitoring of multiple growth variables with systems and CPU programing to adjust and maintain equilibrium conditions.

A stand for a vivarium has a side wall with a cutout and at least one first magnet closure element arranged adjacent to the cutout. At least one cover is provided that is to be inserted into the cutout and at least partially covers the cutout in an installed position of the at least one cover in the cutout. The at least one cover has at least one second magnet closure element that in the installed position is arranged so as to correspond with the at least one first magnet closure element so that the at least one cover is secured in the cutout exclusively by magnetic forces interacting between the at least one first magnet closure element and the at least one second magnet closure element in the installed position.

Pieces of furniture which have a single configuration of parts, but that configuration allows for two different positions into which they may be placed and those positions provide different functionality from each other. Thus, the furniture has two different uses, but switching between them simply requires placing the piece of furniture in a different arrangement instead of removing or adding parts or moving parts relative to each other. Specifically, the piece of furniture is generally flipped-over to switch between arrangements.