Nitrogen cycle complete?

[Franky.2015]

Hello. I am currently doing a fish-in cycle with a 20 gallon Freshwater tank. I am using 2 zebra danios, in which I plan on keeping after the cycle is complete. I am using the Api Master test kit. So far, the cycle has been going on for 3 months and 3 weeks. My ammonia is currently at 0 ppm. My nitrite is currently at 0ppm. And my nitrate is at 20ppm. The readings have been like this for 3 days with the nitrate increasing everyday. I came to conclusion that my nitrogen cycle is now complete. From here, what do I do before I can get more fish? Do I need to do a water change or what? Thanks.

 

[doctordamen]

Hello. I am currently doing a fish-in cycle with a 20 gallon Freshwater tank. I am using 2 zebra danios, in which I plan on keeping after the cycle is complete. I am using the Api Master test kit. So far, the cycle has been going on for 3 months and 3 weeks. My ammonia is currently at 0 ppm. My nitrite is currently at 0ppm. And my nitrate is at 20ppm. The readings have been like this for 3 days with the nitrate increasing everyday. I came to conclusion that my nitrogen cycle is now complete. From here, what do I do before I can get more fish? Do I need to do a water change or what? Thanks.

Sounds like you are cycled! Congrats!
It never hurts to do a water change, I would do one for sure since your nitrates are 20.
You can add a few fish at a time, but give your filter time to build its BB up to the new bioload after each time you add fish. And continue to monitor for ammonia spikes for a few days after you add the new fish.
Good luck!


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