I'm using Advanced nutrients sensi grow part A and B. I'm in the 3rd week of veg, PPM 330, ph:5.3-5.5, room temp: 70 deg., humidity 45%, watering once every two days 2 hours before they sleep. Looks like a boron deficiency to me, but I'd like some input on what you think it could be. I'm growing in rock wool slabs ( ny diesel x sour og)