I had a hand me down 120g that my fish were in. It cracked. So now they are temporarily in my 60 until I purchase and set up a new tank. So my question is more towards ideal tank size, do I get another 120 or aim for something bigger: I have 2 sevs, 1 blue acara, 1 jack Dempsey, 1 firemouth, 1 ghost knife. Also questioning whether I should even keep the jd. (These are all still relatively young right now). Also never been on forums so any and all advice welcome.