When I was doing extract, I never needed an oxygenation system of any kind. When you top off the Carboy with water on top of your Wort, you have plenty of oxygen in the Carboy. The simpler, the better I always say.
You Can Give A Man A Fish and Feed Him For a Day, or You Can Teach Him To Fly Fish And Spoil Him For Life
On Deck MaiBock Helles has Wings 5
Primary Bee Cave Brewery Kolsch 15, English IPA
On Tap Camper's Delight Ordinary Bitter