Thank you everyone. I went to IKEA and bought this new stand for 120 USD. the horizonal dimension is exactly 100% match with aquarium size and on the width it is bigger as you can see. I cannot tell what kind of wood is used for this, but it sure it was very heavy when I carried it and assembled it. now the surface is flat and even. I asked the IKEA sales person if I can use it for aquarium she said, she does not know. but the stand looks strong. I filled it with water and I see problem so far since 24 hour. I hope the would would not crack. here is a picture.


