I'm sorry none of those will likely work. Have you tried calling 'aquarium' searched stores in the yellowpages.com? If so I suggest making a rush order of some meds through Amazon.com or http://www.drsfostersmith.com
Maracyn tc is tetracycline. Maracyn is Erythromyacin. The Maracyn 2 is Minocyline and that will go internal. Maracyn 2 at least or Maracyns in combo is what might work for this from this line. Maracyn plus is two or three ingredients I can't remember off the top of my head but I have heard of it working for dropsy, though I have very little experience with it personally.
Don't want to scare you but once you notice the pineconing you have a very limited window for which to treat him. Dropsy often is lethal within days, so it's really important you treat asap to maximum chance for a full recovery.