sorrY, itS my first sump, so i thOught i couLd use it for a pLace to put roCks, chaetoS and miSc tHings... yoU think itS not needed baSed on my set Up now?
The way it's set up, the rocks and macro would go into the refugium.
Baffles can be used to reduce turbulence and micro-bubbles. Neither of which should impact the function of your skimmer. The impact on your return pump is a different issue, though.