Originally Posted by axbrown
I have the outer brackets flush with the 4x4's, along with the center supports, held together with clamps while we screwed them together. I also put a sheet of plywood along the top, and screwed those into the 2x4 outer bracket. In the end everything was level, so I figured the weight should be evenly distributed. But I am curious, were you worried about the tank breaking the outer bracket and going straight down? Or them breaking lose and the tank falling left or right? Because that would seem like a problem.. Basically how we're you worried about it breaking? Because that would be a nightmare...
I didn't notice it before, but your center vertical piece of lumber, between the two doors when closed, is what I was referring to. It would probably be best if you were to add more supports of equal length to that center piece. With glass tanks, the weight of the tank is distributed around the plastic rim that surrounds the bottom of the tank.
With that, all of the weight of the tank will be resting on the horizontal brackets that make up the very top and very bottom of your stand and NOT the 4x4's. Basically the 4x4's are only there to determine the height of your stand.
If you look at that picture. The green pieces of lumber represent what the 4x4's are in your stand. The purple pieces of lumber are the actual weight bearing supports. With your stand, all I see is one support that would be weight bearing in the center of your build (wedged between the top and bottom brackets). I'd be worried that the screws at the back of the tank that secured the top bracket to the 4x4's would eventually give under the imbalanced support the tank is receiving.
I hope I explained it well enough. If not let me know and I'll try to rephrase it.