I originally had a 10 gallon that I got from someone else that was overstocked and fish weren’t schooled. I then bought this 20 gallon long and cycled it with media from the 10 gallon. It was completely cycled right around Christmas.
I now have 11 embers, 5 neons, 1 honey gourami, 3 ghost shrimp, 3 amanos and 3 mystery snails.
I have the API master test kit and everything has been showing still cycled. I decided to treat the whole tank as one of my neons hasn’t been looking healthy and because I had fish from the original tank plus buying from 2 other locations to get where we are today. The aquarium coop blog recommended doing the whole tank to make sure everyone is healthy and good. Then if I were to buy fish down the line to treat them separately before adding them to the main tank.