I bought a Aqueon 40 breeder from petsmart for $40 to drill for a overflow and from my research the back glass is drillable. But I was looking at it last night and it doesn't have the tempered glass tag showing the bottom is tempered. Only had this tag. The 20l I bought for a sump doesn't have a tag at all on it.
I assume this is them covering their liability since they know people are going to drill them but I just wanted to be sure.
I assume this is them covering their liability since they know people are going to drill them but I just wanted to be sure.


