This Fishless Cycle article has been in the library for some time, but it hasn't gotten much attention. If you don't know what it means to cycle an aquarium, make sure to read the Nitrogen Cycle article.
The Fishless Cycle article, which can be found HERE, goes into detail explaining how to cycle your aquarium by using clear, additive free ammonia. The idea is that a tank can be prepared to support a large biological load of fish without endangering any fish. If you would like to experiment with this method, make sure you read the instructions carefully and follow all directions. Any questions you may have about fishless cycling should be directed to the Aquarium Setup forum.