threaded bulkhead question

[mr_alberta]

Originally Posted by BCWolfen

Speaking of bulkheads etc. I'm looking at getting my 75Gal drilled for it overflow. What size would you recommend. 1" 1 1/2" 2"?

Are you going to supplement the flow with other items such as powerheads or closed loops or is the return the only thing moving water in your tank? I personally would go with a larger bulkhead just so I can upgrade my pump in the future without any worry.