The key to setting up a successful aquarium is to quickly convert the fish waste to a non-toxic form. This is done by nitrifying bacteria. Under normal conditions, it can take 30 to 45 days for these bacteria to become naturally established in a newly set-up aquarium. Unfortunately, during this time period, ammonia and nitrite can increase to levels toxic to fish; a condition called New Tank Syndrome. One & Only Nitrifying Bacteria accelerates the process so that you can set up a new aquarium immediately.
Use One & Only when setting up a new aquarium, after a water change, cleaning your filter, when adding new fish and after a disease treatment to control ammonia and nitrite. Use as directed on the container.