Originally Posted by somewhatshocked
Adam: How did you "cycle" your tank? Did you add bacteria? Did you add pure ammonia to feed those bacteria?
Give us the parameters of your tank:
That'll help us explain what's happening with your tank.
Most likely, fish are dying because you have not properly 'cycled' the tank.
GH: ~150 ppm
KH: ~100 ppm
Nitrite: not detectable
Nitrate: not detectable
Ammonia: I don't currently have a test for that
Temperature: 76 F