What ph? You using hg cocos a&b? If so at what strength (mil/gal)? Thanks... having similar issues but can't get canna coco-- the royal gold coco is ammended with coco and tea and I think that's causing me the problems.I started using Epsom Salt at 1/2 tsp/gal instead of cal/mag and saw my deficiency issues go away in non-precharged Canna Coco.