Macquarium

An iMacquarium

A Macquarium made from a Macintosh Classic II

A Macquarium is an aquarium made from, or made to sit within, the shell of an Apple Macintosh computer. The term was coined by computer writer Andy Ihnatko as a joke at the outdated Macintosh 512K; Macquariums have since been built both by Ihnatko himself and by others.

Ihnatko originally designed his Macquarium to use the Compact Macintosh-style shell. In the early 1990s, several Mac models in this form factor (such as the Macintosh 128K, Macintosh 512K and Macintosh Plus) were becoming obsolete, and Ihnatko considered that turning one into an aquarium might be "the final upgrade", as well as an affordable way to have a color Compact Mac. Ihnatko has mentioned in interviews that he saw attempts to build Macintosh aquariums at trade shows that, among other drawbacks, suffered from noticeable water level lines across the "screen" that spoiled the illusion of a "really good screensaver". This drove him to design a version without a visible water line, and which allowed the external case of the donor Mac to remain intact.

Ihnatko's slant-front tank design, made of glass, had a nominal capacity of approximately 10 liters (2.2 UK gallons or 2.5 US gallons). Some subsequent designs have utilized acrylic glass or lexan. Because of its small capacity relative to most other aquariums, the Macquarium is considered a form of nano aquarium, which requires a higher level of diligence to maintain proper water chemistry and cleanliness.

The parts for some of Ihnatko's Macquariums were constructed with parts from two sources located near Apple's headquarters in Cupertino, California. For these aquariums, Ihnatko used the case of the Macintosh as the tank and sealed the screen and vent holes to be watertight.

Macquariums are often stocked with 2–3 goldfish, which do not require tank heaters and are cheap. However, because goldfish grow large, have high oxygen requirements, and are messy eaters, they require much larger tanks for long-term survival. As such, Siamese fighting fish and small shrimp are better options for Macquariums.

Other Mac models have similarly been turned into aquariums, such as the Macintosh TV, the Apple Lisa, and the Power Mac G4 Cube. Various iMac models, such as the iMac G3, have been used to make "iMacquariums". By 1995, a Macquarium based on a Macintosh LC 575 appeared in a Macintosh magazine titled "Macquarium '95".

The term "Macquarium", as it refers to the Macintosh-based aquarium, is unrelated to the Atlanta, Georgia, user experience firm Macquarium Intelligent Communications.

External links

• iMacquariums built out of G3 iMacs
• Guide to MacQuarium construction, setup, and upkeep
• Andy Ihnatko's original instructions for a Classic form Mac:
• Macquarium construction diary with photos and tips