| sorry I didn't see this thread sooner. My first impression was iron. Which would have been removed by the charcoal in Mike's story. I'm thinking that if the koi are still alive and with us, the beni will have noticeable impairment.
here where I live the city pulls from a reservoir of damed river water but in summer time they also pull from a well and that's when I notice more water difficulties which eventually forced me to go to chacoal/R.O. water to protect my interest.
I would really like to see them add a chacoal filter and run their bio all winter long |