Problem Follow the leaves

Hard to see what’s going on with the lighting. Check your Ph and your heat is too high with the leaf taco going on… so a straight water flush for a few days and go back to PHed nutrient water at a lower dosage. What’s your EC? That’s tells where you add or subtract nutrients

Hey bro! A shoutout! Look, the truth is you should always check that the growing charts are designed or mentioned for photoperiod-dependent varieties (feminized), and honestly, sometimes we can make the mistake of not paying attention to the weeks of growth vs pre-flowering/flowering... in this case, there are clearly some nutrient deficiencies... most likely it's lacking some micronutrients like calcium, magnesium, manganese, zinc... and watch out for excess phosphorus and potassium... Hopefully, measure EC, let's remember that in short-duration varieties, indicas, and fast-flowering, the EC is lower than that of sativa varieties (over 10 weeks of flowering)... A shoutout, masterrrr!

Too many/not enough nutrients and possibly a calmag deficiency.