I'm also so some search on how to build something like this ...
What I have in mine are an 8L x 4W x 2Tall
1/2" all around...
My concerned is the top braces...
Will 2 each 6"x96" for front and back, 4 each 6"x47" = 1 for each end and 2 mid way in the middle. In another word, i will have 6" brace all around the top plus 2 6"x47" pieces running from front to back space out in the middle of the tank. Will it be enough? I just don't want to get another 8x4 if i don't have to. I'm trying to work with 3 pieces of 8x4x.5 . This will be around $1500 for the tank or $3 per gal.