Sounds like you're doing DWC...
I think that flood-and-drain is the cat's ass when it comes to DIY setups.
For oxygenation, I had the table up pretty high over the res and as the drain -um- drained back, the nute solution gained oxygen.
Plus using hydroton pebbles, there's TONS of atmospheric movement around the roots anyhow.
Just my two cents, for what it's worth... probably a penny or so!