not a big move, just across town but i was thinking i would take this opportunity since im gonna have to take the tank apart to cook my old rocks as well as some new ones i plan to buy (maybe 30-40 lbs., i have 45 in a 55 gal. tank) since im getting some nuisance algae lately. Also, i want to get the tank drilled because my overflow box is a pain. I would really love to upgrade to a larger RR tank but i dont have the money right now, so im just gonna keep the 55. My problem is obviously i would have to take the sand out of the tank to get it drilled. Could there be a problem in disrupting the sand bed? its about 2"-3" deep.