I agree that an airstone or some type of small, cheap aquarium pump (or both) would be of help.

Perhaps a slightly larger tank?

The roots are going to need oxygen badly... Perhaps use a good bit of H2O2 (hydrogen peroxide) in your water to help get O2 to the roots. Just be careful not to bleach them lol!

I, too am very interested. Shore, he won't have the healthiest plant, but this is kinda stealthy, it is funny, and maybe he will get a few j's out of this experiment. I am currently doing the shot glass grow competition, and I won't get more than an 1/8th either, but it is still fun!

Good luck and keep us updated bro

Peace!