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  1. Tropical Fish Diseases
    Hi ~ I've had my Ryukin goldfish for a couple months now, I've previously kept fish. She's a medium size. In a 20 gallon tank, alone, with 20gallon filter. Tank temp 69.7 F, ammonia tested yesterday 0, 0 nitrite, 7.6PH, we have hard water here. I don't have a nitrate kit, is the nitrite an...