Leaf issues--cal? mag? (pics)

Not really sure what the problem is here. Recently transplanted into FFOF w/amendments. Water only. pH is good. Thinking cal/mag issue but not sure. Never used FFOF before but can no longer find Blue Ribbon locally.
This is one of my Bianca's

This is an unknown strain

I agree. Looks like Ca def. I'd get a Ca/Mg supplement and add to nutes mix. You can add those elements to a spray bottle of water for foliar feeding. GL

Wouldn't Ca show up in the new growth?

Not 'very' new growth but after a couple days - yes.

The affected leaves are not showing any signs of healing, didn't expect them to. It seems to have quit spreading though.
I think the FFOF is hotter to begin with than the soil I have been using. When I amended with what I usually do it became too 'hot'. I believe this caused a temp lock-out. Either that or it is because I didn't let it sit for a couple weeks to cure before using it.
Does either of these theories sound plausible? I don't want to put my babies through this again but I still have a few cubic feet of it left, thinking about cutting it with some more soil and trying it on a single plant.

@ bioWheel--thanks for the input. I am leery about adding anything at this point since they are sitting in fresh soil that is already too hot. I believe if it is/was a deficiency, it was caused by a lockout not lack of it being there. Possibly pH jumped for a while since the mix was too fresh?