Tony makes a good point with his city, all cities are different, minneapolis water was good, Heron lake water killed fish, worthington water is good but, i went to college in crookston and could not keep fish alive. but people thought it was funny to "get the fish drunk" never failed, some genious would come up with that one, one time a guy (my brother actually) had his whole head and shoulders in my tank "bobbing for goldfish", i had 3, 6 inch red belly piranah in there, plus the light was half way in the water. college was fun, just glad i survived it