If you look really well at a bubbler you'll see that the bubbles go straight up. They don't add all that much oxygen to the tank while going up. So, the main thing those silly contraptions provide is a visual effect that some people enjoy.

Plants, by the time you see pearling you will have had quite a bit of oxygen that's already gone into the water without you seeing it. Would be a good idea in your case. You're providing almost no cover at all to your fish

If you really want aeration use a spraybar on your filter and hang this an inch over the water surface.