Guys check this one out. I bought at Wallmart because I wanted to get the project done. $22 bucks its called the Whisper Quite 30-60gallon. With the newer technology I did not have to even use any glue I unscrewed the 4 screws on the bottom pulled the top off. I then pulled the two bellows to find they had orings. I simply turned the white plastic 180degree and reinstalled them and put the 4 screws in and done. You can see in the pics. Hope you don't mind me posting this. Thanks guys Im glad you showed me how you did this, it inspired me to go buy a new one.