So, after a res change, Applicious ( DWC ) started to feed again. I believe I used bad water, maybe too acidic, not too sure. But normally when it's a problem I can't address, a res change fixes it for me. I believe I attached the chart I use in my media if not, I can always reattach. It's the DWC bible to be honest for any problem in your res.
***Note*** I NEVER run in the 90's temp wise, I had the AC off as I just cleaned the filter and it gets hot fast.