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I'm no organic grower so take what I say with a grain of salt, but I think adding molasses when they are overfed already and showing nitrogen toxicity is a bad idea. The way I understand it is that by adding sugars to the media you will be increasing the populations of your microbes already...

Here is my reasoning: It is for sure an immobile nutrient deficiency as it is happening at the top of the plant while the lower leaves look more or less normal, (or at least less affected). So big three immobile nutrient deficiencies I typically see are iron, calcium and sulfur (could make a...

calcium

Looks like magnesium deficiency to me, use some epsom salts. pretty hard to over due imo so I dunno like 10 grams top dressed on that plant? you can always flush it out as magnesium is super water soluble and easily leached. If you really want to cover your bases you could add calcium nitrate...

totally understand the need for citations. I can look around for testimonials but here is the balanced chemical reaction for the potassium silicate/calcium nitrate mix: K2O3Si + Ca(NO3)2 = 2KNO3 + CaSiO3 Potassium Silicate + Calcium Nitrate = Potassium Nitrate + Calcium Metasilicate (also...

Im willing to bet good money that your cal mag is made from calcium nitrate and magnesium nitrate. If one of your nutrients lines contains potassium silicate and your mixing it into your feed solution that potassium silicate will react with the calcium nitrate to form calcium silicate. calcium...

This is what gave it away: "Also it’s the top that is most affected the middle and bottom ain’t to bad+ the top leaves feel kinda rubbery is the only way I can really describe it" Calcium is an immobile nutrient. The plant cant pull it from another area. You will always see a calcium starting...

Sure it has already been said. Calcium. pH is 5.9.. thats fine you wont see that level of Ca def at that pH just flush heavy with clear then add in a light feed with elevated Ca. general rule of thumb is 2 or 3 to 1 calcium to magnesium also high levels of potassium in coco will agitate...

Nitrogen. Its a mobile nutrient, so as it becomes deficient in a plant it will make its way up towards the newest growth. N def is always seen starting from the bottom and making its way up the plant. Its not irreversible during veg, but during the flower phase that level of deficiency will...

Decent amount of thrip damage at this stage on the lower leaves. that upper leaf looks like it is showing signs of a mosaic virus, but that is just a guess. Those mosaic viruses are pretty common in cannabis in my experience. First time I saw it I thought it was TMV but it never progressed and...

I have seen this species do a lot of weird stuff and i have found mutations to be very common even when growing from cuttings. I think its to do with the varieties not being breed true to seed (no back crossing with the mother plants) and that ends up allowing a lot of undesirable recessive...

6.5 is too high of a pH, I would suggest 5.8-5.9, but try not to swing your pH to rapidly in flower as that can cause the plant to hermie. That being said... That looks like a calcium deficiency, makes sense that its happening in coco. If your not familiar check out some articles on the CEC...