Thanks Dick and Matt.
What I noticed when dragging the mudpond and seeing some of my older koi that were put into the mudpond was a skin quality I could never achieve in my main pond. Even adding clay did not even come close.
The koi glow and every single edge of every single scale had a shine and lustre I never seen in any of these koi before.
Dick you said if you had a choice you would raise them inside, well I for one do not think you can get the same or even close to the results gained from a mud pond.
Did you ever move some of you're older koi to a mud pond even for one month?
The growth of these big koi also surprised me , they grew in length but also in gridth.
The pic below is of a Hasagawa Kohaku that turned Shiro after one month of being shipped to me from Infiltration. The koi grew in length and being female never had a good body shape. The pic was taken after 4 months in the mud pond. The koi increased in length from 66 to 71cm in this time.
