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I know that my water is hypersaturated with gas, but to have bubbles still in the water one week after changing it? I almost feel like the shower output on my filter is overaerating the water and giving my cories gas-bubble disease. Is this even possible?

Try raising the water level in the tank so the filter doesn't produce so much agitation and bubbles. If that doesn't help, then see if you can reduce the flow in the filter.

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I'm not your neighbor, you Bakersfield trash.

I wouldn't think it possible to overaerate a tank...in my 6 ft long I currently have 2 canister filters going that provide 150% of the needed filteration. I also have an HOV going, 6 ft of airstones along the back wall, and 18 inches along the side walls, and that is a lot of bubbles and air going on in the tank...I wouldn't think that it should bother the fish unless it is sucking them into an intake tube or something...

Heck my little C. Hasbrosus like to have bombing missions at the airstones...You can almost hear them..."OK guys lets swim to the top and then on the count of three we dive bomb the air stone, and do a reverse dive bomb just before we hit bottom...1, 2, 3, BONZAIIIIIII!!!!!"

"I've got a great ambition to die of exhaustion rather than boredom." Thomas Carlyle

The water should only be supersaturated with gas if you used cold water then heated it up quickly. Cold water holds more has than warm water, and it is possible to hurt your fish -- at about 104%, nitrogen becomes dangerous. But, you should also see small bubbles on everything, plants, decor, gravel, the heater especially, and even your fingers if you put them in the tank. However, this should only be temporary, and should not happen at all if you use water the same temp as the tank water for waterchanges.

If the bubbles are only on the top, there may be a layer of organic waste that is trapping the bubbles. Pause the filter and airstones and see if you notice an oily layer. You can take a sheet of a plain paper towel and suck up that top oil layer. You will want to increase your waterchanges if that oily layers come back. Smaller but more frequent waterchanges can help in this regard.