Ok, I think I will just leave it be. I don’t feel like I am very overstocked, as my filtration is rated up to 150 gallons, and most uaru only grow to 10 inches in aquariums (still quite large). I figured they would be fine in my tank as aquaadvisor says my tanks stock is only at 83%, and my filtratation is at 121%. (I know aquadvisor isn’t the most accurate, but I still use it for rough outlines), and most sites say that 75 is a minimum tank size for a pair. I also do frequent cleanings (at least once a week, usually 2) However, if the fish show signs of stress when they are full grown, I will absolutely look into a larger tank.
Thanks for them help!