Need help with plumbing

[Younggeekin]

So I'm setting up a 75 gal reef tank.. I'm wondering what size bulk head I should be using and what size holes I should drill in the tank..?? Also where do I buy bulkheads or do I have to order them online ??

 

[TheEngineer]

Welcome!

The size and quantity depends on the type of overflow you are making. Are you using an overflow at all? Most 75g have 3/4" bulkheads in my experience. You can buy them from most local fish stores or you can certainly get them online.

 

[Younggeekin]

I'm planing on just having a sump and not a over flow