Use ammonia to cycle a new aquarium without putting at risk.
This video will explain how to safely and quickly cycle a new aquarium.
If you want the absolute fastest way to get a new aquarium cycled, the best way is to introduce a sizeable beneficial bacteria colony from an already established aquarium. The most common method would be to place a filter pad that has been in an established aquarium into your own filter. If the established tank uses an undergravel filter, you can take a cup or two of the gravel from that tank, place it in a mesh bag, and add it to your filter. These methods have the potential to instantly cycle your tank, but they also run the risk of accidentally introducing diseases into your aquarium.
On average, the beneficial bacteria colony size will be able to roughly double each day. Once your tank is fully cycled, if you lose half of your bacteria colony (for example, by replacing filtration media) or double the amount of ammonia being introduced to your aquarium (for example by adding new fish), equilibrium should be reached again in about a day.
I seed all of my new aquariums for an instant cycle
Nitrogen Cycle (Part 2): New Aquariums - Doctors Foster and Smith
Some call it the biological cycle, the nitrification process, new tank syndrome or even the start-up cycle. They all are referring to the same cycle - The Nitrogen Cycle. The aquarium nitrogen cycle is a very important process for the establishment of beneficial bacteria in the aquarium and in the filter media that will help in the conversion of ammonia to nitrite and then the conversion of nitrite to nitrates. Check out the aquarium water chemistry page (on the left) for more information on these terms. This is the preferred way to get the nitrogen cycle started because the fish are being exposed to ammonia and nitrites during this process. Many fish can not and will not make it through the cycling process. Often times the fish become stressed and fish disease starts to break out. I wonder what percentage of disease is caused by the cycling of new aquariums?What Happens When Cycling Happens. In a new aquarium, the cycle begins when ammonia is excreted in fish waste. Bacteria begins to grow in the filter, gravel and other surfaces of the tank. After a week or two, bacteria that breaks down ammonia into nitrite (NO2) grows to sufficient numbers to begin to get ahead. Ammonia levels decrease, nitrite appears and increases. After a two or three weeks, bacteria that breaks nitrites into nitrates grows to sufficient numbers to get ahead. Nitrite levels decrease, nitrate appears and increases. After after three or four weeks, all the bacteria players are in place. All ammonia is virtually immediately processed into nitrites, and the nitrites in turn processed into nitrates so quickly that ammonia and nitrites are detectable only in trace amounts if at all. Nitrates are removed by water changes. If fish are removed, ammonia is no longer being added, and the cycle bacteria will eventually starve and disappear.Media from well established aquariums Traditionally people seed bacteria for starting aquarium nitrogen cycle by using an object from an already established aquarium. This object can be a decoration, or some gravel. The best thing to use in this case is a piece of filter media. Since most beneficial bacteria colonize on the filter media, by putting a piece of filter media from a well established aquarium into a new filter in your new aquarium can give quite a jump start for cycling your new aquarium. Since not everyone has the access to a well established aquarium, this form of bacteria seeding is not available to everyone.