Hey arent you forgeting the most important thing inside the tank?... water!! i dont have to remind you how much water weighs and a 6x2x2 one would have alot of it( 679.6 kilos to be exact) Pressure would be alot at the bottom of the tank and towards the middle. Fill up a 6mm 4 feet one with 80% water and you will see the glass bend like no bodies business towards the centre even with bracings. 
A fairly large arowana does have alot of strength, try catching a 20 inch one out of a tank without transmore and you will see what i mean. Btw 10 mm isnt very thich u know?... better to be safe than sorry i always say. I dont want my 2 thousand dollar fish dried up on the floor just because a stinged a few dollars on a tank.
A fairly large arowana does have alot of strength, try catching a 20 inch one out of a tank without transmore and you will see what i mean. Btw 10 mm isnt very thich u know?... better to be safe than sorry i always say. I dont want my 2 thousand dollar fish dried up on the floor just because a stinged a few dollars on a tank.
