Whynot91;5159504; said:2 rays - 8"
2 arrows - 6"
2 pbass - 4"
i have other tanks i'm going to move them to as they get bigger.
With those sizes and if you're really moving them around when they get bigger I'd say you have plenty of filtration. I guess it depends on how big you're going to let them get before moving them. You might want to get another bass because they work better in groups of at least 3.