We have had our 2 red foots now for a few weeks. They are about 5 years old, and we got them off craigslist. We have been giving them tapwater in their water dish and in their soaks. When I went to the pet store the other day, I saw some liquid that you can add to their water; I can't remember what it's supposed to do, but I can look when I get home. My question is, is tapwater safe for my torts? Or are you supposed to add something to it like you would for a fish aquarium, to take the harmful stuff out? I can't really find any info. on this subject. Thanks for your help.