I currently have a 30 gallon freshwater setup with a Marineland C220 filter. It is stocked as follows: 4 clown loaches, 1 anglefish, 1 silver dollar 3 neon tetras 4 black tetras 3 female swords 1 male sword 1 oto, and possibly a baboo shrimp that I haven't seen for a while. I would really like to move to a 55 set up but I don't think the filter would support this. I know that the loaches will only become to big, but I don't want to get rid of any of the fish, hence the agony. What would you folks do????????