Tfrawley
New member
I woke up this morning to find 2 of my domino damsels dead and my new harlequin bass dead, and my other damsels all were losing color and breathing heavy. I had gotten my water tested the day before and everything was at 0 except for nitrate which was 30ppm, which I assumed was from adding new fish. Everything was healthy and eating before but they just seemed to die overnight. Need help what could be the cause so I could remove it before anymore fish die...