<span class="link_user">@Bncgrower</span>, yea sweet I’ve had the same issue with a plant in the past was only the one, buds were juicy covered in trichomes just wouldn’t take K from the roots she just ate the leaves.
I also think it can be a calcium “toxicity” locking out Potassium maybe not for you you but I think I may have overdone the CalMag considering it’s in the base nutrients and additional in coco is a must but need to cut it out week 5-6 flower. Checked your grows all look beautiful I like your style :+1:
<span class="link_user">@PharmaZ</span>, Yeah, man, I often thought that was the case too. The problem is, I mix 60 liters at a time—I never had issues doing this with Athena, but I ran into a lot of trouble with Advanced's "Cultivator Series." The longer the mix sat in the reservoir, the more the pH would drop; the last time I checked, it was down to 3.5. So, the plants couldn't absorb the nutrients. And you're right—since the plant couldn't take up what it needed, it ended up using the potassium reserves from the leaves, especially the older ones. But everything is fine now; it’s already been harvested, and I’ve ditched the "Cultivator Series."