"This piece of smoke colored glass is 48" across from flat edge to flat edge and the flats are 19 1/2".
“According to the calculator I have I can get away with 6mm at 24" tall if less than 24" of width.”
These contradictory statements are where I think the 6mm guide may fail. Depth governs the pressure but length and width, of the body of water, govern the force.
Also 6mm will not take much of a bump from _either_ side of the glass and (I presume) with eight glass panels the placement of the tank will be central and more likely to be bumped accidentally.
That being said I’m sure 6mm will hold water but your safety factor will be low.
Good luck with the build.
“According to the calculator I have I can get away with 6mm at 24" tall if less than 24" of width.”
These contradictory statements are where I think the 6mm guide may fail. Depth governs the pressure but length and width, of the body of water, govern the force.
Also 6mm will not take much of a bump from _either_ side of the glass and (I presume) with eight glass panels the placement of the tank will be central and more likely to be bumped accidentally.
That being said I’m sure 6mm will hold water but your safety factor will be low.
Good luck with the build.

