Even if its not 1/2" you can make the tank 25", just lift the glass up off the floor about 5". It wont have as much pressure on it then. If your 125 is 18", make your top viewing area 18'.NJKILLSYOU;797817; said:ok well my idea was to take my perfectly fine 125 and use the glass for a bigger tank. i dont know if its a great idea, but it is an idea. haha.![]()