Yes! I would do both, unless someone has reasons not to. Keep in mind that a plant needs Oxygen even in the roots in order to live. They use CO2 during daylight to make energy via photosynthesis, but during the dark periods, when most growth occurs, O2 is used to power the plant (although it doesn't use as much as it creates during the daylight)... this is one reason they used to remove flowers from patient's rooms in hospitals in the past. Airstones, a little fountain... anything to get O2 into the water will help.