A standard kreisel tank housing various moon jellyfish A kreisel tank (kreisel becoming German for "spinning prime" or "gyroscope") can be an aquarium formed similar to a horizontal cylinder that's created to maintain delicate animals for example jellyfish and newborn seahorses. These aquariums provide gradual, circular drinking water circulation that http://northlandfeatured.com/directory/listingdisplay.aspx?lid=47092