I am thinking about drilling a hole in the glass of my Hagen 108 gal aqarium for use in an overflow box/sump filter. The tank is aproximately 10 year old and I am wondering if any of the glass on the bottom or sides tempered?
I am thinking about drilling a hole in the glass of my Hagen 108 gal aqarium for use in an overflow box/sump filter. The tank is aproximately 10 year old and I am wondering if any of the glass on the bottom or sides tempered?
