I have a 55 gallon tank that has been running for a few months now. I haven't fully stocked it yet because I was in the process of selling my house and moving and didn't have time to set up a quarantine tank so I decided to wait till after the move. I am now ready to finish stocking it. Right now it has 1 dojo loach, 1 rainbow shark, and 6 congo tetras. I am planning on adding 1 featherfin catfish, 1 rubberlip pleco, 1 more dojo loach, and 4 gouramis. What order should I add them and how many would it be safe for me to add at a time? I am going to set up a 10 gallon quarantine tank to house any new additions in for 30 days before putting them in the main tank, I just want to make sure that I don't add too much to the bioload at one time. The fish that are in there are quite a bit larger than when I got them since they've been in there a while and the new ones will be small so I was hoping that maybe I could add them in 1 or 2 groups.