Nutes mixing order??

I would say your ph of your medium is out of whack. Check your runoff ph and ec levels, flora series has cal/mg so when you add to your medium if your in coco you only add 100 to 150 ppm 0.2 to 0.3 ec once every week or two.. and only if you see a deficiency. If you add cal/mg take away that amount from your other nutes so your total ec remains the same. Right now you should be 5.5 to 5.9 ph in the coco and ec should be 1.2 to 1.4 ec 600 to 700 ppm. Cheers