Mr. Aqua's Fortune 48 gallon cube glass aquarium is produced using high clarity glass providing an ultra clean and clear view of your aquatic life. This aquarium has 8mm thick beveled edge glass for the walls of the tank and 10mm thick glass for the bottom panel. Mr. Aqua utilizes a thicker glass for increased rigidity with a specially formulated silicone manufactured in Germany that bonds the glass together with extreme strength while being safe for your fish and aquatic life. Each non-tempered glass aquarium is meticulously assembled with straight and true beveled cut glass and a fine application of high strength silicone, making the Mr. Aqua aquarium not only watertight and rigid, but also aesthetically pleasing to the eyes. Warranty Info: All Mr. Aqua rimless aquariums are covered by a craftsmanship 1 year warranty from date of purchase. Important Info: The surface the tank rests on shall be perfectly flush along the entire surface of the bottom of the aquarium, with no areas of separation from the surface of the glass to the surface the aquarium rests upon. The surface on which the aquarium rests shall be completely level. The surface shall not have any physical dips or debris that may cause pressure points on the glass. The aquarium must be placed on a closed foam mat that is at least 0.25 thick and cover the entire surface of the bottom of the aquarium. For ordering purposes, Fortune's aquarium mat is MAT-830.