If you haven't read this it's a good read about skimmers
http://www.reefcentral.com/forums/showthread.php?t=2598316
Should i be worried about micro bubbles in my tank if i don't put in a bubble trap? How can i keep the water in my sump consistent for my skimmer if i don't have a baffle? Another design im considering is a 1 baffle and 1 bubble trap design. 1 Baffle that closes in the overflow drain and skimmer. And then a bubble trap after the refugium so that the return pump dosent get micro bubbles