So I’m not sure what’s going on with my medium but it seems to be raising the pH quite a bit. I’m thinking that instead of nutrient burn this was actually a pH lockout again .
I did a light flush with pure RO water and then did a full nutrient feed at 725 ppm. these plants are amazing how fast they recover as you can see in the picture she perked right up!! I’m going to continue to slowly raise the nutrients but very slowly and monitor.