The PH-8.4 mg/L, Nitrite-1.6mg/L, Ammonia-0.1mg/L and Nitrate-20 mg/L. I have one large koi about 12 inches, three small one about 4-5inches and four goldfish.
Ammonia and nitrites at these levels may depress the immune system of your fish.
Please go to this link and learn more about water quality.
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