What plants do you have/plan on getting? It'd be sweet if you could post pictures. For air ou can do a few things. Either go buy an air pump, airline tubing, and an airstone. Or, buy an air pump, tubing, and a sponge filter (better idea). Or, Powerheads, don't see why you'd need them if you don't have weather loaches or a similar fish. To increase oxygen lower the water line of the tank so the filter splashs the water harder, adding oxygen.