The only one of the answers are right - @SpinerGrow. Its defenetly Nitrogen deficiency wich gose farther on 7 week and cause the Iron deficiency as well. All that happend just because your pH is to low for soil substrate. You should rise it at least to 6.2, wich is the lower red line pH in soil before you get a nutrient lock. The soil pH range is 6.5 - 6.2. Advaced growers start with higher pH at veg and gradualy lows it down as it gose in to flowering. My recomendation is to rise the pH to 6.4 and to spray foliar Alg-a-Mic gently on the affected leafs. As well i would make some Urtica(Nettle) tea, wich is the best sourse of Iron. All you need is 250 grams of fresh nettle leafs and 1 litter of RO water. Put the leafs in the water and let it soak for 24 houers in dark with room temperature. Add it to your solution and spray foliar. But Alg-a-Mic will do the job as well. Happy growing Bro!
The flowering of your plants looks to be progressing very well. There not much better than watching the flowering nodes begin to take shape and form beautiful buds. I'm eager to see how your grow finishes up and I wish you all the best in the rest of growing these girls. Cheers :D
hey man, i see you're entering the final stage, just one comment, you can't really know if it's ready from the hairs - after all, they turn brown when you cut and dry... you need to look at the trychomes with a magnifier 40x minimum and see if they are transparent, white inside or red, max potency is 100% white trichomes. hope this helps bro ! 🚀
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