Hey all. I have a 6 ft 180 gal that has 2 large rock islands and one end with no rock for bottom swelling LPS corals. The tank is bare bottom which I like but I miss seeing these corals on the sand. They just don't look great on the bare bottom. Has anyone seperated the bottom so only part of it is sand? I don't want dishes or anything but something more natural looking. I have an idea I think may work but wanted some thoughts as to whether is is a good idea. I'm thinking about building a rock dam out of smaller rock 2-4 inches high to seperate the area then adding sand into that area. Flow is not too crazy, 2 mp40 high enough to make the nems sway. I've added a full tank shot and one where I would like add the sand. The yellow line is where the dam would be. Pics are not good as lights were just coming on and my free hand drawing leaves much to do e desired but I think you can see what I'm proposing. So do think this is doable or not?