I have two that I will be putting into my 220 and I may still feel the need to rehouse them down the line. First, if they don't continue to get along and second, if they get too big. I'm hoping for the best right now though.
I have a 55 gallon
5 roseline around 2 inches
5 juli corys less than half inch
2 yo yo loaches one a half inch and other 1 inch
1 dojo around inch and a half
1 Electric blue acara about 2 inches
3 platies
1 Upside down catfish 2 inches
1 Raphael catfish inch and a half
1 pearl gourami inch and a half
3 cherry barbs less than inch
I run a 60 gal sponge filter and a eheim canister rated for 92 gal and do 35% ish water changes once a week and gravel vac real well.