Each aquarium is created with safe tempered glass or bubble acrylic. The depth of the aquarium from the wall to the face of the frame is only 4.5" giving it an appearance of a stunning wall mounted painting yet deep enough room for your fish to play and swim in. For added convienienc, you can turn this fish tank into a saltwater or fresh water aquarium. These aquariums are absolutely breathtaking and the perfect conversation piece for your room. They are also a space saver and will be the center piece of anywhere you place it. You can be one of the first to own one of these pieces of unique live art work! They are extremely easy to mount, clean and maintain.