So, I just lost 14 platys in two days. It started with all the fish swimming right at the surface of the water, then all of a sudden they started dying! When they were hanging at the surface I did a level check with my API master test kit and they were:
So..... I did a 30% water change to get the nitrate out. I used API stress coat and API stress zyme and API aquarium salt in the new water that was the same 76 degrees that my tank lives at.
The next thing I know one by one about an hour apart they all died. Nitrate dropped to 30 and ammonia and nitrite were still zero.
I looked carefully at the dead fish and there is no fuzz, white flecks, redness, scales sticking out, or anything wierd.
I feed them 3 tetra tropical crisps per fish twice a day, and everything was hunky dory until all of a sudden they started acting funny and dying.
The only fish that survived was a baby green Cory catfish.
I have 3 bubblers, 2 live plants, and a waterfall filter, so oxygen should not be a problem.
What happened to my tank
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