After I lost battle to bubble/cyano/gha algaes a months ago I decided to cook all of my rocks. While they are sitting in the dark tub this presents me with the opportunity to get rid of U-tube overflow, i.e. drill the tank. My tank is a standard 48" long 55G tank from WalMart. If I could remember when I bought it there was only one red sticker on the bottom that says "do not drill, tempered glass", but there were no stickers on other glass surfaces. So, If any of you guys have tried to drill this particular tank please let me know how or who could do it for me. Thanks a bunch!