Plywood

  • We are currently upgrading MFK. thanks! -neo
If you have the space go for deeper 6x4x2
 
with the 6x2x2 3/4 inch ply should be fine also you can use 3/8 inch glass at that water height. with a 4 foot tank it would be best to build 2x4 walls and line them with 1/2 inch ply and at least 1/2 inch glass
 
There is a glass calculator stickied in this forum.
 
MonsterFishKeepers.com