I'd like to build a rack in a walk in closet using this design. On the top will be a frag tank that measure 48" L X 18" D X 12" H. The frag tank is 45 gallon and sits on a plastic frame. An acrylic sump (48" L X 20" D X 20" H) will sit on the bottom. I'd like to build the rack a little longer than the tank/sump to take up the length of the wall that it will sit against (59").
With the sump and frag tank having different depths I was thinking about making the rack 20" deep with plywood tops for both to sit on. I'd put cross braces between the top rails. If I do this the load for the frag tank will be on the plywood. Will this be Ok? If so what thickness plywood should I use? 3/4"?
Also do I need 2x6s for the upper rails if they won't be supported in the middle or would 2x4s be sufficient? I see that 2x6s are normally recommended for spans over 48" but larger tanks are referenced. Thanks!
With the sump and frag tank having different depths I was thinking about making the rack 20" deep with plywood tops for both to sit on. I'd put cross braces between the top rails. If I do this the load for the frag tank will be on the plywood. Will this be Ok? If so what thickness plywood should I use? 3/4"?
Also do I need 2x6s for the upper rails if they won't be supported in the middle or would 2x4s be sufficient? I see that 2x6s are normally recommended for spans over 48" but larger tanks are referenced. Thanks!