Thanks for the ideas. I'm checking the Deltec clones right now.

Going w/the pump upgrade to the Sedra 5000 ($130+ shipping) for now per Euroreef's advice. New pump will double the lpm of air injected. Kudos to EuroReef. Got responses to my emails within 3 hours each time, and the skimmer is over 4 years old and discontinued! Not a lot of companies provide awesome service like that.