?? my lil one is about 45 days old, about a week into the 12/12 light cycle and i've noticed the tips of some leaves showing what i thought was nutrient burn at first. i'm currently using MG Flower Boost but i noticed that the older leaves seem to show this "burn" first working its way up the plant. according to the "Bible" its a sign of a mobile nutrient deffeciency, similar to the pictures shown for a Zn defficiency. question: what can i do or change to bump up the Zn intake (if that is the problem)? always learning, randy http://forum.grasscity.com/absolute-beginners/817006-help-virgin.html
a lot of times a nute deficiency is caused by a off spec ph thereby causing nute lockout. you have to keep your ph stable and change if necessary in small incriments. ph is especially touchy the farther along you are during the flowering cycle