Abstract: 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.

Abstract: A component of a water feature for generating an illuminated water image is provided with a housing and an illumination unit fixedly arranged in the housing. A water channel passes through the housing and has at least in sections thereof a round cross section. At least one projection is arranged in at least one length section of the water channel, wherein the at least one projection projects toward a longitudinal center axis of the water channel. The at least one projection forms a part of a nozzle receptacle. The water channel in the at least one length section where the at least one projection is provided has at least in sections thereof no round cross section. A water feature provided with the component is provided with a plug-in nozzle insert inserted from below into the component or an insertable nozzle insert inserted from above into the component.

Abstract: The present invention relates to a method of removing a uranium source from a water, a kit for removing a uranium source from a water, and a use of a powder comprising (i) an alkaline earth carbonate, (ii) an alkaline earth compound chosen from a chloride and/or a nitrate compound, (iii) at least one alkali metal hydrogen carbonate, and optionally (iv) an alkali metal carbonate in a method of removing a uranium source from a water.

Abstract: A water feature for generating an illuminated water image has a housing and an illumination unit fixedly arranged in the housing. A water channel passes through the housing. A nozzle insert is disposed in the water channel and is designed to create a water image. The nozzle insert is supported so as to be pivotable relative to the illumination unit. The nozzle insert is supported so as to be pivotable about a pivot point, wherein the pivot point is positioned at a same level with or below a light-emitting top side of the housing. An alignment and fixation tool is provided that has first contact elements designed to engage second contact elements of a securing element that secures the nozzle insert so that the securing element can be released or fixed by rotation of the tool.

Abstract: Provided are fish food compositions that include 40-70 wt. % cereal flour, 15-30 wt. % meal from aquatic animals, 10-20 wt. % extraction meal, 0.01-0.40 wt. % pepper, and 0.1-1.0 wt. % free methionine. Also provided are methods for using the fish food compositions as a fish food for ornamental fish.

Abstract: The present invention relates to a method for conditioning water, sediments and/or sludges using alkaline earth metal peroxide, in particular calcium peroxide, and cable bacteria, to a kit comprising a composition comprising at least one alkaline earth metal peroxide and cable bacteria, and to uses of a composition which comprises at least one alkaline earth metal peroxide in combination with cable bacteria.

Abstract: The present invention relates to a process for forming or obtaining vivianite in or from a phosphorus-containing waterbody, sediment and/or sludge, to an apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge, and to the use of a composition comprising at least one alkaline earth metal peroxide and a magnetic separating apparatus for obtaining vivianite from a phosphorus-containing waterbody, sediment and/or sludge.

Abstract: An (aqua)terrarium, in particular for ectothermic animals, has a container serving as living space. The (aqua)terrarium is provided with a climate control device that comprises a flow machine, in particular a fan, and an electrothermal converter, in particular a Peltier element. It is provided that the climate control device sucks in air from the container, conditions the sucked-in air by guiding it along a first side of the electrothermal converter, and conveys the conditioned air back into the container.

Abstract: 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.

Abstract: An (aqua)terrarium, in particular for ectothermic animals, has a container serving as living space. The (aqua)terrarium is provided with a climate control device that comprises a flow machine, in particular a fan, and an electrothermal converter, in particular a Peltier element. It is provided that the climate control device sucks in air from the container, conditions the sucked-in air by guiding it along a first side of the electrothermal converter, and conveys the conditioned air back into the container.

Abstract: A water feature for generating an illuminated water image has a housing and an illumination unit fixedly arranged in the housing. A water channel passes through the housing. A nozzle insert is disposed in the water channel and is designed to create a water image. The nozzle insert is supported so as to be pivotable relative to the illumination unit. The nozzle insert is supported so as to be pivotable about a pivot point, wherein the pivot point is positioned at a same level with or below a light-emitting top side of the housing. An alignment and fixation tool is provided that has first contact elements designed to engage second contact elements of a securing element that secures the nozzle insert so that the securing element can be released or fixed by rotation of the tool.

Abstract: A component of a water feature for generating an illuminated water image is provided with a housing and an illumination unit fixedly arranged in the housing. A water channel passes through the housing and has at least in sections thereof a round cross section. At least one projection is arranged in at least one length section of the water channel, wherein the at least one projection projects toward a longitudinal center axis of the water channel. The at least one projection forms a part of a nozzle receptacle. The water channel in the at least one length section where the at least one projection is provided has at least in sections thereof no round cross section. A water feature provided with the component is provided with a plug-in nozzle insert inserted from below into the component or an insertable nozzle insert inserted from above into the component.