Do i need a brace?

[HypA]

Hello

I have a homemade aquarium with measurements of 70x25x40, it had a divider in it, which has also served as a brace. The glass is 6mm thick, now that I have removed divider/brace. Do i need a brace on top, when the aquarium is 25 cm high? What are you're thoughs, better be safe then sorry, or is the 6mm glass thick enough?

Regards Kristoffer

[SLIMESLAYER10]

fill it up outside and if it bows a lot then put a brace on it

[Jools]

With 6mm glass I would add a brace.

Jools

[HypA]

Thanks for advice.

I ordered 2 pieces at the local glazier, just to be sure.
The aquarium is actually 80 cm.

[Bas Pels]

I´ve had tanks of 80 * 40 * 40 (cm) made of 6 mm glass, without any brace

They were build in the 1980´s I think the silicon kit was not better than now in those years