So, I know this sounds far fetched, but in discussions with a friend on another forum, I was told that NYC does not chlorinate it's tap water. The reasoning behind believing this, according to this person, was that both our tanks continually became re-infected with flukes despite prazi treatments and no new additions. Params are absolutely fine, as I don't usually let my nitrates get over 10ppm, and there are 3 fish in a 75. She conjectured that since there appeared to be living parasites coming into our tanks through the tap, that our water was likely not treated. What do y'all think about that?