I posted in my build thread also, but I thought I might get more responses here. I am in the process of building my first reef tank and would love some input on how I have set up my rocks. The tank is a Waterbox 20 AIO. The blue line on the right and back side of the cardboard is the edge of the tank. I might cut off a couple of small pieces of rock to ensure there is enough space between the rock and the glass to clean. The top of the rocks are at 10", but the top of the tank is 15" high. Is this enough clearance between the rock and the waterline? Any and all input would be greatly appreciated.