Ok guys, I have had a few posts on this about my new 4-5"rhom. I have him currently in a 20g tall. I am looking at getting a new tank this weekend. I was thinking of getting a 72g bowfront for him. Or transfer my five 4" rbp into the bowfront and move the rhom to the 55g. Is a 72g bowfront big enough for the 5 rbp? What about keeping the rhom in there for life? Is it a big enough tank? I want to avoid the 125 because I don't want to have to move it when I move out. Also I have a penguin330 running on my 20g tall. If I just use this filter on my new tank, and put some gravel and bioballs from my 55g tank and wet/dry into the new tank, how long should I wait to put in the p's? Any input would be helpful. I also have the option of just going with another 55g or a regular 75g. The only difference in the regular 75g and my 55g is that the 75 is wider. Would this be a big difference? Any suggestions would be appreciated. I wonder if this is right forum for this? Hehe.