how close to top can a glass tank be drilled?

F1 VET

THE serrasalmus rhom
MFK Member
Nov 3, 2011
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INDY
Hey guys, about to drill my glass 180, but wanted to know how close I can drill it off of the black trim on the top...
Thanks all!

John
If its not tempered and u have a glass drill bit u can go about 1/2" but go slow and becareful!

#1 S. Vettel
 

Dan F

Fire Eel
MFK Member
Dec 10, 2007
3,889
24
68
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Oregon
When I had my 135 drilled by All-Glass (I ordered it with four holes from the factory) they wouldn't drill it less than 4" from the ends or 3" from the top. They said it was to reduce the chance of the glass breaking under the stress of the water pressure.
 
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