I'm finally moving my reef from the standard tank it's been in (for over 5 years) to a new 90 gal. AGA Reef Ready. Does anyone what size bulkheads I would use? It looks like they are 1" to sump & 3/4" return but i'm not sure. I get confused because I know the holes are larger than the pipe size the bulkhead will be. BTW, I will be using a Durso 1" threaded standpipe.

Thanks
Art