tataceanswered grow question 8 months ago Hi, as usual I go against the grain. Plants are kind of pumps, if they need more water they will also absorb more nutrients and vice versa. The advice you find regarding the EC is always related to a specific situation VPD (Calculated via temperature and humidity) I advise you rather to adjust the nutrients based on the EC of the soil (If it drops it means that the plants want more, if it raise they want less), with this technique in the last 3 grow I have avoided deficiencies and toxicity. Good luck :)