New aquarium overflows

Spydersweb

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Hello all,
So I finally bought what will be my 1st SW aquarium. It’s a 90 gallon with a single corner overflow. The default plumbing it comes with is two holes for bulkheads; A Durso, then a return from the second bulkhead. My question is; would it be better to plumb the single Durso and the return from the second bulkhead, or would it be better to use both bulkheads for a Herbie, and plumb the return around d the back? Is the flow rate the same for the herbie and durso? Is the benefit if a herbie just the backup emergent drain, or is there more to it? Thanks in advance!
 

WHAT DO YOU ALWAYS RUN OUT OF AT THE WORST TIME?

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  • Fish or coral food

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  • Test kits or reagents

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  • Filter media or replacement fleece

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  • RO/DI filters or supplies

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  • Fragging and repair supplies, like glue or epoxy

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  • I keep a backup of everything

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  • Other (Post in the comments)

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