i have a 75g tank and i was wondering how long before i have to up grade (size not time) i have 3 fish soon to get another. they are 1 silver aro 4.5" and two p bass 3" i will get another p bass at 5" soon as they are large enought to handle him. so what size should i upgrade.
You're a long way from home.... you do know their potential size, right?