For many, the sound of water or thiet ke ho ca koi working with a water feature in their backyard fairly soothing. Using a koi pond can be even more peaceful. If live in regions where it gets very cold in a bitter winter you may think that cannot have koi fish. If you think this, then you wrong. The survival rate of Kinh Nghiem Thiet Ke Ho Ca Koi Ban Phai Biet in winter is high if consider the right precautions.