Guys,
Hell broke loose. I have no clue what happened but all of a sudden my 3 fish died. Others were breathing very heavy. Came back from work and this was happening. Did a quick water test everything was fine except nitrates. 160ppm. Did a 90% water change. Tank is running stable for almost an year. Healthy population of polys that's it. I haven't changed anything. Food quantity is minimal . I add prime as well last water change was a week ago.
Any ideas ?
Hell broke loose. I have no clue what happened but all of a sudden my 3 fish died. Others were breathing very heavy. Came back from work and this was happening. Did a quick water test everything was fine except nitrates. 160ppm. Did a 90% water change. Tank is running stable for almost an year. Healthy population of polys that's it. I haven't changed anything. Food quantity is minimal . I add prime as well last water change was a week ago.
Any ideas ?