Well, having arrived in Japan on the 13th of October, I first headed South to Mihara, where I picked up my rental car, and headed straight off to see Takigawa-san. One thing I did here at Takigawa Koi Farm, was to check his 'Sakura Ike' mud pond water TDS.
For all of you who think you have managed to get your TDS low, I bet it isn't this low! ;-) That said, it isn't practical or feasible to run a filtered pond this low.
