Alguien sabe que carencia es esta?

Some twisting.. points to Zn-def or maybe pH related? It's rare for this to be a problem in soil. so, ensure pH is 6.5-6.8 - substrate as well as anything that goes into it, first. rhetorical: What are your watering habits? Do you let it dry about 1" on top before irrigating? Do you religiously get 20% runoff to waste? If not, start doing these things too before any major reaction or choices made. by doing that, you maintain a fertile equilibrium of nutes and soil... almost impossible for buildup to occur, which can cause lockout and pH issues that are impossible to diagnose without know exactly what was dumped into soil over last many weeks and even then all the lockout caused symptoms make it impossible to know what exactly is the cause. Looks a bit mild right now, so you have the luxury of doing it the right way without guessing.