I think your protein skimmers are good oxygenation. If you just needed flow you can go with a power head. You dont' have to buy that from the place I linked or the exact one I linked, just showing you what is out there. You can find pet stores here in San Antonio that have power heads for sale. I do recommend maxijet but that is only because I have used some and haven't had any problems with them ever.

I think you will be pleased with the flow of a power head and how quiet they are compared to an air pump.

What did you use to seed the bacteria in your tank when you first started it up?

One of the things I recommend is just getting some seawater from an existing aquarium to help get yours started. Even better is if you can get "live" sand or "live" rock from somebody. The "live" stuff is sand or rock that comes from the ocean and has so much life on it and in it that people refer to it as live.

Live rock and live sand have organisms that actually filter your water and make it cleaner so getting some of that to start your aquarium is awesome. If you are low on cash filling your aquarium full of live rock can be a little expensive.

I have heard of people going to Corpus and getting sand from the dunes out there for their tanks then seeding it with live sand.

Do you have a refugium? Some people use activated carbon in their fuges to grow bacteria on and that, once it has copious bacteria growing on it, can act as well as live rock and live sand if you use enough. Richard made a post on the activated carbon and it is still up on the first page.