Fish are cheaper here. LOL, dude, you may want a BAKKI shower filter, i think it is the easiest to build and of course the most cost efficient. Everything you need can be found just about anywhere. You're RTC will grow to 5 foot. They dont swim as much as an aro would so i think you will need a temporary 5x3 aquarium. That's just me though, i've not much experience from large cats. If you need help about how to build a bakki i think i can help.