(Phoenix, Az. USA)
I had never heard of coir before and am setting up my Worm Factory 360 using it now in preparation for receipt of my worms tomorrow.
After reading about not using water from a water softening system to soak the coir, I am a little concerned because I do have a water softener system.
It's too late to change course now, so I will have to wait and see if there is significant impact.
In the future I will be using filtered water through my Brita system. I'll write later to update on my set up experience.
With that said, I am anxiously looking forward to using the worm castings on my plants and garden as soon as possible.