Pretty basic really-- Paid close attention to balance while buying/finding lava rocks, and made sure I brought an ample supply of smaller ones. Make sure the lower rocks hold back the aquasoil firmly so that the higher rocks can sit on top of the mound. I brought a bunch of tools with me like un-used paint brushes and painting knives. I have one of those sand-levelers from ADA but I think the real usefulness of that thing comes when the tank is filled. With a dry tank, shorter handled tools will allow even more control.