New Tank Cycling

The Aquarium Nitrogen Cycle is nature's way of recycling nutrients. Bacteria and plants convert nitrogen compounds, animals eat them, and plants and bacteria consume animal waste. In an aquarium, fish produce waste (ammonia), which is absorbed by beneficial bacteria and plants to make the water safer for fish. Aquarium cycling is crucial for a new tank, as it establishes the ecosystem necessary to process ammonia. This process ensures that the fish tank can handle waste without harming any animals in the environment.

Various methods for cycling an aquarium exist, with some being simpler than others. Recommendations based on successful experience managing numerous fish tanks.

Fish-in cycling is a common method for cycling an aquarium that is used by both beginners and experienced fish keepers. Rather than waiting weeks for beneficial bacteria to grow in an empty tank, this method involves adding a few hardy fish to kickstart the cycling process. It is recommended to start with just a few fish and gradually increase the amount of food given over the next few weeks to allow the beneficial bacteria to grow.

Additionally, adding beneficial bacteria from an established tank or using live nitrifying bacteria can speed up the cycling process. Regular water testing for ammonia and nitrites is important, and partial water changes should be done when levels are above safe limits. The cycling process is complete when fish can be fed normally, and ammonia and nitrite levels are at 0 ppm while nitrate levels are above 0 ppm. Keeping nitrate levels under 40 ppm through regular water changes is essential for the health of the fish.

Fish-less cycling is a popular method for growing bacteria in an empty aquarium by adding fish food or ammonia. Although many people have found success with this technique, it is not recommended for beginners as it can be difficult to complete correctly. If you choose to use this method, be sure to seed the tank with beneficial bacteria to help the process along.