Water is fine but Fish keep dying?

  • Thread starter Thread starter xybulmaxy
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xybulmaxy

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Okay I have a 10-15 gallon tank, before I bought the fish I had the water tested and they said the water was fine. So I let it cycle for 2 days before I bought the fish, My tank has white and different color blue rocks in it, I don't remember if they were coated, but I bought them from walmart.

I first got 4 fish, two feeders and two im not sure what they are called but they were silver and black. The day after I brought them home, one of feeders died and then one of the black and silver one. The other two stayed alived until I bought 2 more which I had them up until now because one died yesterday and the other, I just saw it My husband said it had fish fungus or something...

Could someone tell me what I am doing wrong? How can my fish be dieing when the water was good. Also i use to have a heater in it until it killed my first fish.
 
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