My fish dying? Can't figure out why.

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joeynuna

Aquarium Advice Regular
Joined
Aug 25, 2009
Messages
53
Location
Relocated to St. Louis with job. From NYC and soon
My fish are dying? Can't figure out why.

I have a 20 gallon tank with 4 mollies and 2 Cory. 1 molly is an adult and 4 babies. I had 5 mollies and one of the babies died last night. The adult molly has been ill for at least two weeks. At first I thought it was swim bladder. I fed her peeled peas. She began to improve and then she took a turn for the worse. She lays on the bottom of the tank, barley eats, but once in awhile she will swim. Now one of the other babies is showing the same symptoms. I have no idea what to do. Help! Now, I did add some painted rocks to the tank. These were supposedly aquarium safe rocks. I feel it may have something to do with the problem. They have been removed from the tank.

Ammonia - 0
Nitrites - 0
Nitrates - 10
PH 7.5
KH - 4
GH - 8
Temp 80
 
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