This our Nisai house where we take Nisai (two year old fish) to grow on over the
winter. This is a steel framed building constructed using fully insulated panels.
The temperature in our nisai house is maintained at between 23 - 26 degrees to provide
summer temperatures which will give the right environment for our koi to continue
growing. At these temperatures, the fish are very active and their immune system
is fully functioning. Each tank holds 4000 gallons of water and all the filtration
is custom made.