Doh!, too late! I was gonna say DONT clean the back wall, leave it natural as it is kind of ike a flat rock backdrop. I was however gonna say clean your sand. Dont stir it up deep, just maybe the top 1/4". Oh well....., lol.
Also, if you can, from my presepective, move the rock mounds (just as they are) a little more to the back. This would free up some space in the front for those bif fuzzy...............things. This isnt something you "have" to do, but, would give you something TO do.
