I'm gonna be honest, I can't tell if you are joking or not. If you aren't, let me start with this...You've got a silver aro, two goldfish in a 32 gallon tank with a powerhead? You've mentioned you're "poor asf", my suggestion is to take back the arowana asap to wherever you bought it from. If you can't afford to provide proper filtration on a 32 gallon tank, then you will not be able to support a silver aro long-term either, considering they can get upwards of 3' in length. The bare minimum tank size most recommend is a 250 gallon for an adult and IMO that is too small.
Do yourself a favor, take back the arowana, take back the goldfish, get a small filter and some tetras for now or don't have any fish and be happy until you're done with college and have a job where you can get what you want and afford to provide adequate housing, filtration, food, etc.