Petsmart has a sale on aquariums. I bought a 40 breeder :dance:. I wanted to know if all the glass was tempered? I called Aqueon and they told me to take it to a glass shop.:facepalm:. I also tried the polerized sunglasses. When I looked at the tank I didn't see any patterns like the back windshield of cars. Also the bottom plate didn't look tempered either. I wanted to drill into the tank for a drain. Any thoughts on the matter?:rolleye1: