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Koi Lover

Aug 10, 2007, 5:15 PM
Post #1 of 5
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Just lost 2 kois from separate ponds. both kois died suddenly. Just a day ago, they look and swim normally and are very healthy. Suddenly they look weak and swim slowly then after a few hours, you'll see them fall to the bottom of the pond.water parameters are all perfect. Ammonia, nitrite, nitrate, DO, pH are as usual. everything looks normal; scales, eyes, skin. No wounds, scratches, etc. Body slime, same as usual. What are the possible causes?
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