Quote Originally Posted by opium89 View Post
Tap? Egads man. My tap water isn't even suitable for drinking. I hope you're at least using a dechlorinator. You've more than likely poisoned them.
For at least 4 months I used the exact same tap water and never had any problems with it. I've had the same fish for about 6 months now and only within the last month have I been having problems with it.