Where to get glass notched ? Lower Mainland
 

I have a 24x18x18 tank & was hoping to get the back top notched to run an external overflow . Can anyone recommend where to go ???

overflow
 

it would be better to cut 2 large holes then cut across and install a plastic overflow

Not sure what you mean . Plastic overflow in the tank ? Cut where ? There is 1 hole in back glass w/corner overflow now . Overflow runs too high for me .
I'm looking for ideas!
But was trying for clean look , didn't really want a overflow in tank but I might have to .

Ok, Did some searching & think I know what you mean . So it would be a larger open slot hole & then cover bottom of slot to desired height with plastic .
????

overflow
 

something like that.you can get the pm overflow combs at j&l for about $16

Some of the glass shops have CNCs that can do clean notches. Niki Glass's factory has one. Call them.