The Lifegard Aquatics Ultra Crystal Clear Aquariums feature 45° edges and ultra-clear low-iron glass. The glue joints are invisible. Crystal tanks are rimless and made of ultra-low iron glass which allows the viewer an undisturbed viewing of their underwater masterpiece. Includes a back filtration compartment with a return pump and filtration media. They come with either a filter on the side or the back and there are six sizes to choose from.Useful Links:Setting Up A Small Planted Shrimp Tank (in a Lifegard Ultra Crystal Clear Aquarium) VIDEOILifegard Aquatics Ultra Crystal Clear Aquarium Replacement Parts & Media