FOWLR 125 Gallon (first saltwater tank)

Hello everyone,

This is my first post about my start of getting into Saltwater. I'm planning on doing a 125 gallon that I just purchased and setting it up as a FOWLR.

The one thing I don't know is the best thing for filtration. I purchased a Fluval fx6, but after reading around was curious if I should set up a sump with skimmer tank instead.

Any other advice is welcome too.

Thanks!