By shell dwellers are you meaning snails or the shell dwelling cichlids that el337 mentioned? The tank size would be fine for some shrimp and snails. It would also be fine for a betta. IME the snails and shrimp could generally care less about a bit of a higher flow. If you go for a betta, you would probably want to baffle the output, which isn't hard to do.Okay, I was thinking just ghost shrimps or shell dwellers
Not going to move forward with setting up the tank?Never mind