| Hi all just want to mention my experience here in Australia. There are still very few close to no one using softwater on their ponds in Australia except for me. Many of our kois from breeders are grown from dams but majority of these dams have hard water as they use a lot of underground water.
I have personally seen a kohaku from a pond with around 900 ppm TDS reading go within 2 weaks from light yellowish skin to snow white skin within 2 weeks of being in the TEWA KOI pond (TDS of 50ppm) and also great improvement in Hi and Beni.
TEWA |