Glass Thickness For Large Tank

[sphelps]

Also keep in mind you can vary the glass thickness throughout the tank depending on it's design and layout.

For example 3/4" on the front with a 4" euro brace will eliminate any noticeable distortion. You could use 1/2" for the sides if you're OK with seeing a noticeable difference in glass thickness (not an issue if only viewed from the front). The back could be 5/8" or even less depending how the overflow boxes are laid out. The base can also be significantly thinner provided the stand offers adequate support, 1/2" is typically plenty provided the entire base area is supported. The overflows could be as thin as 1/4" unless they are being used to support the back in which case 3/8" is sufficient.