over flow

[mm16]

I'm begining to pipe out my new tank, and I have my first question, how close to the water line should the drain be for the overflow?

Thanks

 

[Nasoguy118]

Is your tank drilled?

 

[mm16]

Yes with the buit in overflow box

 

[Nasoguy118]

The top of my 90s are 1" from the top of my overflow box.

 

[mm16]

Thanks