I'm thinking about getting a 6-foot frag tank (Waterbox frag tank). My plan for the tank is to grow out acros on frag racks. Has anyone had success growing out acros in a Waterbox frag tank or something similar? In my mind, I don't think it's possible because there is no rock in the main display and no sand, so it will be very hard to keep stable. I see a lot of people grow out acros in frag tanks on YouTube, but I believe these are all connected to bigger systems.