An aquarium also changes the atmosphere of the room by introducing a calming and relaxing sound - that of bubbling water or trickling water. This is caused by the various devices that maintain the oxygen level etc in the tank but sounds like a natural babbling brook or something similar. This is incredibly restful and has the same kind of effect as does listening to one of those `sounds of the shore` or `sounds of the rainforest` Cds when you`re going to sleep. Finally an aquarium provides your room with a central feature, which will change the rest of your decorating to suit. A very large and eye-catching item like an aquarium will automatically become a centrepiece and as such it will demand its own space - making it either the centrepiece of the room or at least that half or that corner of the room. It should be treated in the same way as a large television in the living room, or as a fireplace meaning that other large pieces should be kept out of distance and furniture should be turned to face it in reverence. Literally, and atmospherically then, an aquarium completely transforms a room.