So, ive used maxi on a few grows with great results. I am currently running a bunch of different strains from seed. One of 15 or so plants is showing signs of a deficiency. I typically dont run an ec over 1.2 and everything is happy. I upped the ec a bit and its still showing what i believe is a cal def. I went to the hydro whore last week and they were out of cal mag. I thought id post some pics and get some input before i add anything.
Try some Epsom salts if you can't get cal/mag. One teaspoon per gallon of water as a foliar application. That will take care of a mag deficiency if that's what it is.