yesterday i was at my lfs and saw that they had a tank full of baby silvers maybe 3 in or so. i couldnt believe the price $17. right now i only have a 90gal corner and a 125 rec. ive read that an aro needs at least 300. my question is how long can i keep one in my 90. im a glazier so i have done any and everything with glass except build an aquarium. if i can build a 60story highrise and endless other custom glass structures im sure building a 350gal fishtank shoulb be easy how long do i have before i have to move him, ive never kept one and i really want to.any advice would be appreciated.