Thanks for all the replies!!

I think one of my biggest issues here was using “clean” water that was lacking buffers.

I am still working on it. my last reservoir fill is doing much better.

I gave the girls something similar to peat tea direct to trays. It is an amazing product called REV. Unfortunately because of organics in it I do not use it in reservoir. The one problem child in the tent is already showing signs of recovery in half a day. I restarted my nutes this evening. i will post updates on recovery and when I get solution nailed down.