The only thing added was dolomite lime at about 1/2 tblsp per gallon....but that was about 2 months ago
I will try to remember to get my notes tomorrow for you.
FFOF is a great base, I used it myself when I was in soil. But it needs a lot of ammendments to really give you good results. Particularly off the top of my head, lots of perlite, some peat moss, dolomite lime mixed in. I also would add some beneficial bacteria, mycos and azos.
Your soil may not have enough air, or micro organisms to chelate your nutrients.
I wouldn't add more cal/mag, as you are already past the recommended dosage, your ppms are good, and you are just showing that small amount of tip burn already.
You need to increase the plants uptake somehow
