The AQUABLOCK is a unique new gift idea. The perfect glass fish tank for anyone, at any age! A child's first aquarium or a soothing, eye catching addition to a dull office. These are perfect desktop sized aquariums and the plant and gravel are glued down for easy cleaning. Simply pour out 3/4 of the water and replace it with room temperature water. The Betta fish does not need to be removed while cleaning! NO filters or pumps required! The AQUABLOCK is a true care free fish habitat! No two AQUABLOCK fish tanks are the same.