Trying to drill through my overflow

[duper15597]

hello, I have a 250 gal with a center overflow. I am trying to drill a 1.5 inch circle through the side of my overflow. I am creating a easy water change system. My overflow seems to have glass or acrylic covered with plastic. Does anyone have any experience with this? Is this normal for a larger tank? If it’s glass does anyone know if it’s tempered? I emailed the guy I got the tank from for a name of the company that made it. Thanks for the help!!

 

[duper15597]

hello, I have a 250 gal with a center overflow. I am trying to drill a 1.5 inch circle through the side of my overflow. I am creating a easy water change system. My overflow seems to have glass or acrylic covered with plastic. Does anyone have any experience with this? Is this normal for a larger tank? If it’s glass does anyone know if it’s tempered? I emailed the guy I got the tank from for a name of the company that made it. Thanks for the help!!

 

[duper15597]

I added 2 photos to see

 

[Redleg]

That looks like it's glass wrapped in vinyl to me. Only the manufacturer could tell you if it's tempered.

 

[ca1ore]

There are a few manufactures that do this still. Glasscages comes to mind; maybe coast-to-coast also. I had an old, early reef ready tank that had an acrylic shell over a glass overflow. I think it probably is not tempered, but only the make can say for sure. Ideally you'd remove the shell because the bits to use on plastic and glass are different.

 

[McArcher]

There’s one sure fire way to find out if it’s tempered. You might not like the results, though.