I've never had a tank and sump before, always All in Ones and the stands for the AIOs usually has a solid wood board that it sits in. I just bought a Planet Aquarium 120 gallon tank with sump. I was looking at the stand and noticed that it's open in the center and the aquarium is sitting on the corners, is that normal or should there be a brace in the middle to hold the glass? Sorry, don't have pics now but can get some once I'm off work