Do I have a root or nute problem?

If the ratios listed on diary are correct... You are using too much Cal-Mag.. With Tap Water you may not even need Cal-mag.. And with the Flora Trio/ most nutrients you don't need Cal-Mag at all... Growing in coco requires Cal-mag because the Calcium gets absorbed by the coco. Calcium is a micro nutrient and if your ph is in check.. Then this is exactly what calcium excess can look like.. Keep in mind as well cannabis handles a lot of Calcium before it shows excess.. Save yourself some money use less or none at all.