Heyy I have recently decided that adding a koi pond to my yard would be a great hobby to begin! But I have tonns of questions. My main question would be....On our property we have a natural running spring that runs into an already man made cement pond that is 8x4x2. The water is always circulating and never freezes over in winter. The bottem of the pond is covered in mud setiments. Would this even be suitable for me to go about and making it into a koi pond. I do not plan on have a large amount of kois but just a couple to enjoy! Hopefully this would be something I can do because I am already VERY excited about it!! If it makes any difference my little brother had stuck a rock bass in there last summer and we just saw him swimming in there today! But of course he will be returned to the river as soon as possible since we didnt know that he had put him in there! Anyyy advice at all with be greatly appreciated! Thank you!