[mike31154]

My tank sits in a corner so really only two sides viewable. I let the back glass do it's thing, coralline even hair algae on there. My mandarin dragonets appreciate it since that area harbours additional pods as a food source. It hides the hoses from the canister filter back there. Also have a wad of chaeto hanging on a bracket off the back rim. Without a sump you make do. I've let the one side glass go as well now, used try to keep that one clean but it became a pain with limited clearance to the wall so I figured why bother. More surface area for microscopic critters.