what size bulkhead is ideal?

[Trigs]

i am looking to drill a few tanks, wondering what size bit to get also seeing what the best size of bulk head is thanks

[Glennrf38]

I think 4 foot bulkheads are the best. that way you can get inside and really clean them

It all depends on what size the tank is and how much flow. The most common seem to be 1" 1 1/2" and 2 ".

[Trigs]

ya thats what i was thinking, i was thinking on getting either a 60mm bit or a 65 mm bit

[Myka]

My tank has a 3/4" return, and a 1" overflow. The holes for those are 1 1/2" and 1 3/4".

[michika]

Try this!

[Trigs]

lol i dunno how much gph i am wanting i am just setting up a few tanks connected to one sump so i am drilling a bunch