:( can any one help me?i am a newbie.i bought two redcap orandas about aweek ago,one has died the other is still swiming fine.ive done a water change on saturday my amonia level on the 11/3 were 0.75ppm on the18/3they were1.5ppm.my nitrite levels 11/3 were0.0ppm on the18/3 they were...