Is this your Grape Slushie? You don't have any nute information on her if it is.... If there are no nutes, then your soil is probably too hot... too much nitrogen in it. If she's got a nitrogen toxicity, then you can throw an entire bottle of calmag at her and it won't make any difference - the plant won't be able to get at it. I would flush her out with 3x the pot volume of pH'd water and let her dry out... you can then add some calmag to the water next time she needs something.
You can grow organically with ready-mixed nutes, you know... and those manufacturers have done all the calculations as far as what the plants need... Even then, though, you'd need to be adjusting according to what the plant is telling you... but it's easier!
Good luck...