Quick question

[Fenton]

I'm currently building a 10-6-4 foot deep pond. 2 foot in the ground and 2 foot raised. I have a 3 by 1.5 foot sheet of glass from an old tank, 8mm thick. Is it thick enough to use as a window right at the top, in the middle of the 10 foot front?. No biggy if not, just and idea.

 

[Yuki Rihwa]

TBH if you want a window that small (smaller after you put it in frame...etc) then I wouldn't bother with it at all to save all the headaches down the road.