Bean Animal/Herbie

[BCOrchidGuy]

Looking at building a Bean Animal for my 75 gallon tank. I'll probably run about a 900-1000 gph return from a sump that holds about 22 gallons. Will 1in Schedule 80 be adequate? I was thinking of putting in a 2 in emergency overflow in but it looks like 1 in will handle well over 1000 gph if I read the charts right.
Finally, is a bean animal and a herbie the same thing?

D