So right now if you've read my threads i have a 5or 6 inch loiselli in a 20 gallon long until i can get my bigger tank back up in a few weeks... What i wanna do is trade in the the oscar and jag that are with him and scared of him. what set-up do u like for a 55-75 but eventually to be put in my 125 after i get married next year? I may keep the jag but the oscar is gone. I figure the fish i want can be kept in a 75 for life but not the jag. I wanna make sure the fish have room once they go in the 125. let me know what you think...