Anyone have experience keeping these 2 together? They are both Acantharus tangs, and probably shouldn't be together ideally, but are also listed as 2 of the more peaceful tangs. I'm planning on adding a Powder Brown to my current 4" long 90g established reef tank, which has a yellow tang, the lavender tang, 2 clownfish, and a 6 line wrass. I was planning on getting some sort of separator for inside the tank when i first introduce the PBrown after the quarantine session. Anyone ever tried that?