plumbing questions

[o0jmadr0x0o]

i want to get my tank drilled, what size holes would i need to handle 900gph drain...also how necessary is an overflow box, i am worried about noise

anyone have example pics of a good layout to have the tank drilled

 

[Deanos]

Recommended Drain/Overflow size calculator

 

[Bob 1000]

Recommended Drain/Overflow size calculator

You are so damn helpful.. That's really good.. But how do you do this so quick???

 

[pEEshEE]

You are so damn helpful.. That's really good.. But how do you do this so quick???

See his avatar??? He's got the answer in the palm of his hands... at all times :biglaugh: