Remove the glass hood. Oxygenation takes place at the water surface. Air bubbles only help when the break the surface causing a bit of surface agitation. You want a powerhead (or 2 or more) that point a bit towards the surface so that you don;t have a flat surface,, but rather a rippled surface.
Keeping a glass top prevents the gas exchange which can lower your pH.
When your cycle is complete you want to do a large partial water change (30% - 50%). Then leave the tank alone for another week. At that point check all the water parameters:
(Specific Gravity / Salinity)
Measured with a refactometer (swing arms are notoriously unreliable)