Drilling tank

[mestorm121]

Hello reefers

I got a 125 gal glass tank for free last year and was wondering if I could drill it. There is a sticker on the bottom Paine of glass that says tempered glass do not drill and cleaned in 1999 jw. Does this mean all the glass is tempered or just the bottom piece

 

[lapin]

You will need to test to see if the pane you want to drill is safety glass or not.
An internet search will give you a few ways to tell.