A well-designed and maintained aquarium is a treat for the eye, a conversation piece, and a satisfying hobby. Some are much more than that.

Pieter van Suijlekom's Reef Aquarium is a fantastic saltwater tank system with a total volume of 2074 gallons. Read about the process of building this tank, the equipment used to maintain it, and the fish and other creatures that live in it.


The Fish Highway is a water-filled overhead tunnel connecting two (or more) aquariums. As long as no air gets in, fish can travel from one tank to another! For a simpler version, you might try the Fish Condo, which is three connected fishbowls.


Aquadom, the world's largest cylindrical aquarium holds 900,000 gallons of seawater. It sits in the lobby of the Radisson SAS Hotel in Berlin. Around 2,600 fish call it home!


This antique Birdcage Fishbowlis an odd pairing, with a birdcage on the bottom and a fishbowl on top. There is a bubble inside the fishbowl, which the bird can rise up into. This achieved the illusion that the bird is in the bowl with the fish!


The coolness of a normal tank can be enhanced by a clever casemod. Michael Khor recycled an old TVby modifying it to accomodate a fishtank.


Macintosh computers reused as aquariums are called Macquariums. Here are five different styles.


This tiki-themed tank full of piranhas is homemade. The building process, documented with photographs, takes several pages in this forum. You can also buy one ready-made.


There's already water in the bathroom, so what better place for a fishtank? Oliver Beckhert designed the Aquariass toilet tank aquarium, with a fishtank in the tank. The aquarium is separate from the flushing tank, so the fish are safe. The Fish "˜n Flush is another version of the idea. To complete your bathroom theme, you might check out the Moody Aquarium Sink.


The aquarium can be work of art, or it can be the medium for art. Takashi Amanointroduced Japanese gardening techniques into aquascaping, turning them into displays of natural art.

I honestly tried to find a Klein bottle fishbowl, but I don't really think that's possible.