Thanks Bill, I sort of figured that. I know my mother doesnt want to lose her big goldfish. I dont think she cares if the young end up as snacks. Thus we were trying to figure out what to use as a starting point where we didn't lose the big goldfish. Thats why I thought of YP. I thought that maybe after a few years and beore the YP became stunted we could add some SMB to the pond as well to help the YP. I am not sure that SMB would be good in her pond as it is not as deep as mine. But I wanted to see what would make the most sense.
To me it would be easy to take the excess from my pond to help hers out, but I didn't know what would be best for her pond with the mix she would start out with.
Either way all thoughts are appreciated.