Drilling an 80g Glass

Mekong

Active member
So I heard that Dolphin Pet Village would drill glass tanks. I want to get my 80g drilled. The bottom is most likely tempered, it a ââ"šÂ¬Ã‹Å“Top Finââ"šÂ¬Ã¢"žÂ¢ tank from pet-smart I got 3 years ago. I was planning on getting the back left corner drilled and using the Remora Pro Pre-Skimmer to make the overflow box.

So what I am wondering is how big of a hole can I put in the back of the tank with out worry of breaking?

I have also considered getting a U-tube style overflow, but am worried about the siphon breaking and causing a spill. So what would people hear recommend?
 
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