I understand. We’re so excited to get our new fish home and in the community tank. So we put them in. Stop! Big mistake!!! I can’t tell you how many posts we get from members who are trying to save their beloved fish because a new fish brought a disease into the tank. I’ve been there. Last year I did quarantine some new neons for 5 days. One had a tiny spot on his tail and I decided it wasn’t ich and placed them in the community tank. Soon over 50 neons were covered with the worst case of ich I had ever dealt with. Took over a month to clear the ich and lost several tetras and a Cory as a result. After cycling a tank, quarantining new fish is the single most important thing you can do for your fish. I’ve heard all the excuses there are for why a person didn’t quarantine. None of them made sense. If you don’t have a QT tank, then don’t buy the fish. Get a cheap plastic food safe container, a small cheap heater, and a cheap sponge filter to keep on hand for quarantines. Keep some extra sponge in the back of your main filter and just pop them in the quarantine filter when needed. It will give you a cycled tank pretty quickly. You may say, “I never quarantine and I’ve never had a problem.” I tell you, your time will come. So please, please quarantine all new fish for at least 2 weeks. It will save a lot of heartache and expense down the line. 
