https://www.backyardchickens.com/threads/could-this-be-mareks.1313121/#post-21408610 See my last thread for the beginning. Necropsy came back today. What I suspected was Avian Encephalomyelitis or Marek’s is not. It is actually inconclusive as to what caused their symptoms. I culled the chicks so they didn’t die on their own, but I’ve had one die since then from paralysis....and 2 more become paralyzed. They diagnosed it as multiple organ inflammation....but what caused that? They had encephalitis, meningitis, mineralization in kidneys....all kinds of stuff. Nothing definitive. No bacteriological findings. So my next question is—would the addition of water softener cause this? That’s the only thing we did different. I housed all sorts of unrelated chicks (some of my own, some purchased from different breeders) from Dec-May in the same conditions. We added a bag of salt (softener) at the end of March, and it seems like we started having random deaths at the end of April. There was no paralysis until mid May. A few chicks died after a week or two with no noticeable symptoms, and then all of a sudden paralysis started. It’s either that or something fungal I would think...because it was only ones in a specific brooder. It’s wood, and parts are discolored from use. Food has been from different bags, new and not moldy. I’ll call the state vet tomorrow but just wondering if anybody has ever had a salt toxicity?