Deficiencia en Royal Bluematic #2

Ca and Mg are 2 different needs of the plant. they are not tied together in any necessary way. Mg won't show a deficiency for 4-6 weeks, so it;s a bit early for that. Ca is yellow-brown spots and Mg has rusty spots with interveinal chorosis. 2 distinct set of sympoms for 2 distinct elements of need to the plant. Purple petioles indicate a need for P, but purple petioles can also be genetic or even LED-caused. the coinciding symptosm do not match P-deficiency. potassium deficiency is possible. would need to see it progress more to be certain. calcium has an antagonistic effect on P and K. It is also possible that if oyu added too much calcium, this could cause a normally proper amount of P or K to be insufficient due to availability in the plant. check out my GD profile. there is a link to a google drive with a leaf symptom chart and mulder's chart. understanding these two things can be a great help to accurately diagnosing issues that you see. it's more complex than simply add this or that when you see a particular set of symtpoms what you soil is bringing to the equation is an unknown. pick a path, let it play out, and take notes to try something different next time. be ready to fail a couple times. definitely learn to do this yourself. you can trust yourself better than others.