It’s not recommended to skip the cycling process when setting up a new aquarium. The cycling process is necessary to establish a beneficial bacterial colony that will keep the water safe and healthy for fish.
However, there are a few ways to reduce the time it takes to cycle a tank. One of the ways is to use pre-established filter media from a mature aquarium to jumpstart the cycling process. This will introduce a mature colony of beneficial bacteria to the new tank, which will shorten the cycling process. Another way is to use a bacteria starter culture, this will introduce beneficial bacteria to the tank, to speed up the cycling process.
It’s also important to note that if you are using a pre-existing tank or equipment that has been previously used, it is still important to test the water and make sure that it is safe for fish.
It is important to have patience and understanding of the process, skipping it may cause harm to the fish and not guarantee the long term well-being of the tank.