naa thats not it. both clones ended up being the same too that proves a mistake was made in the first place so. we're you ever able to get rid of the leaf fade without adding cal mag? if so did you just raise the nutes?
I get rid of the leaf fade / variegation from raising my pH to 6.6 in Soil and 6.0 - 6.2 in Hydro. Of course these numbers will change depending on medium and how that medium adjusts over time compared to your nute pH. I never add any CalMag to anything. When I have sensitive plants that have a similar look to the leaves, it's usually due to a low pH. I've been able to fix all these types of problems simply by raising the pH and getting it back in line. Mg seems to do best a couple of points over 5.8 where the plant can receive more Mg. These plants are being flushed and prepared for harvest so it is much harder for me to adjust the pH of the soil at this point.