Hi Noodle. I read up on this thread and it sounds like you're having some major water problems because of the floods. I understand that getting a source of spring water is going to be really difficult so here are three options that might help. One is to boil the water (you can store it in a bucket). This should kill most any pathogen in it. However, boiling the amount of water needed for a water change in a 5gal tank could be tricky unless you have like a huge soup pot.
A second option is to use a water filter like Brita or PUR. It may improve the water quality enough that Tina feels back to her old self.
Finally, you can keep her in the ISO tank, which might make using spring water a little more manageable. This might work too if you find you need to boil the water but don't have the time or space to boil several gallons worth.
I wouldn't go for the ParaGuard just yet, though it is a good med to have on hand. If things do go south, you can use the API Ick Cure for parasites.
EDIT: I also second Matt's suggestion about using carbon filtration. That would probably help a great deal to get rid of some pollutants in the water on top of trying one of the other methods. Also, you don't necessarily have to use all spring water. A half and half mix might be enough. This would stretch the spring water a little further.
Used an old belt tied to a skateboard. Tied the water bottle down with shoe lace.
Working on the water change for her iso tank now. Planning on using conditioner, stresscoat, epsom salts, and IAL. Anyone have experience with decaf green tea bags? I heard that can help calm them down.