Leaf spots

check your soil/water/run off PH

Not knowing your feeding schedule and style is gunna make this hard, so this is only a guess! Phos/manganese/calcium deficiency possibly? Theres some good deficiency charts you can look at online, but all of those deficiencies i stated, can look quite similar to an untrained eye, being they all result in similar symptoms, but in specific spots and ways Being that there are random splatters of the brown spots, this makes me believe its calcium but once again cant be sure! ✌️

Yes

I must add xD natural fade my ass 😅 U also has edge canoieng and tips burn, that could be overwatering, but i doubt Or K excess/deficiency, but more likely since u have P def then u easily can have K def. U,re right in P window, so ur P should be incresed like 16 days ago with a slight change of K

@Organoman did u look at his diary? Didn,t u know that Ca deficiency shows its sings on the new leaves that get light ? Hmm i think not 😂 Also Ca def don,t affect edges, but only between veins. I do like when u trying to teach me somthing and then i can get u face dirt 😉

John, John, John...............this is a classic example of advanced calcium deficiency..................maybe you don't know EVERYTHING. I would certainly not identify this as a phosphorous issue. At this late stage, it is doubtful you can "fix" anything in a meaningful way before harvest, but increasing or adding a calcium supplement may help it from getting worse.

Don,t listen to these fools, what u have is P deficiency, just increase P fert by half and u'll fix this problem

i know plenty of top tier data folks that still refer to a join diagram before writing a join, just for visual reference... we should all be intimately familiar with a bonafide dich. tree for discerning leaf tissue observations with respect to nutrient uptake. kis organics is prolly the best one around IMO. just google 'kis organics dichotomous key'

Potassium deficiency, similar to Calcium deficiency but it starts from the edge of the leaves.

some leaf spotting and discoloration is normal the plant’s pulling nutrients back into the buds. It’s natural fade, not a big concern. If the spots are just on older leaves and not spreading aggressively to new growth, you’re fine. That’s just the plant finishing. If the spots are spreading fast or you see fuzzy growth (mold), then worry. Otherwise, just monitor and don’t stress. You’re in the home stretch focus on the buds, not the leaves.​​​​​​​​​​​​​​​​

Looking at image those brown spots appearing on the upper leaves around day 44 of flower usually point toward a calcium or magnesium deficiency, which is super common during this stage of heavy bud development. Since it's happening on the top growth, I’d also check if your lights are a bit too close or intense, as light stress can often mimic or even trigger these nutrient issues by making the plant work harder than its intake can handle. Check your pH levels first to make sure nothing is locked out, and if that’s fine, maybe look into adding a bit more CalMag or adjusting your light height slightly to see if the progression slows down. Happy Growing Growmie🌱