BTW, you might want to consider painting the back of your tank before you put water in it. The paint will hide all of the tubes and cords that aren't very pretty to look at. Spray paint works great and 2 quick coats usually will do. Its a lot easier to paint when empty. You can choose whatever color you like, most do either black or some shade of blue. Some people do the paper-type background, but I like the paint better cuz the water can get between the glass and paper, then when it dries you'll have salt there and after a while doesn't look so great.