| 摘要 |
<p>Apparatus for use in maintaining aquatic animals in a state of hibernation. The apparatus is of the type comprising a holding tank (200) to contain the water environment, a horizontal, perforate partition (507) above the floor of the tank, a particulate filter bed (508), (509) supported on the partition and extending to the walls, the filter bed bearing a culture of denitrifying bacteria, and a water conditioning circuit. The water conditioning circuit has two sections, a first circuit having a circulation pump (206), a water cooling device (213), an activated carbon filter (214) and a water-returning spray assembly (208) and a second circuit incorporating a skimmer assembly (211). The first circuit is to draw water to be conditioned from beneath the partition and to turn the conditioned water to the tank. The skimmer is a vertical tube, open at its upper end, the upper end being near the surface of water contained in the tank, the lower end being in communication with the first circuit upstream of the pump and the carbon filter via a conduit, the skimmer assembly being isolatable from the first circuit by a valve located on the conduit.</p> |
