Overfeeding is what happens when someone reads a 600 gram yield claim on a feminized strain and tries to buy it with nutrients. Past a certain point extra feed only builds salt in the medium, burns leaf tips and locks out other elements, so the plant ends up both overfed and deficient. Nutrient toxicity is named as a stress factor at https://queenfeminizedseeds.com (https://queenfeminizedseeds.com) right next to deficiency, with both counted as possible intersex triggers. Starting at half the bottle dose and watching the plant has never cost anyone a harvest.