I dont think its good...

Hey, did you do a boost for calcium and magnesium? Do you have liquid fertilizers like CalMag from BioBizz or Epsom salt or maybe dolomitic lime? But yeah, I think there's a big deficiency on that side, but at this stage, you won't recover your yellow leaves 😟 I wish you good cannabis growing 🙏👌👍👋👋

A nitrogen issue starts at the bottom and works its way up. We can't just assume it's nutrient related, could be locked out because of PH. Make sure her needs are being met and everything is in order before turning to nutrient problem. It could be a root issue. Are you letting her dry out completely? Lift pot after watering, should be heavy. When it's light weight, it's time to water. This is part of the reason I use bags to grow. they weight nothing

What do you fertilize with? How much and how often? When was the last time?

A mistake many growers make when switching the light to the flowering cycle is removing the growth nutrient and only using the flowering one. In the first 2-3 weeks of flowering, you can use both the nitrogen-rich growth product and the flowering product, and together they provide the necessary macronutrients. By the fourth or fifth week, you can remove the growth nutrient and just stick with the flowering one. Cheers and happy growing 💨

That’s more yellowing than I’d call a normal late-flower fade, especially with the upper growth going pale too. I wouldn’t blindly increase fertilizer though. 🌱 First check watering/root-zone conditions and make sure your pH measurement is reliable. If those are good, then yes, she may simply be underfed—particularly nitrogen and possibly Mg. With BioBizz I’d increase feeding gradually rather than suddenly doubling the dose. The damaged/yellow leaves won’t turn green again, so judge the correction by whether the yellowing stops progressing and newer foliage stays healthier. Also, 120 W at 30–35 cm tells us surprisingly little—PPFD at canopy level would be much more useful than wattage/distance.

Don't worry. it just needs a little nitrogen. Don't overdue it though. don't taper off too quickly in flower people are way to paranoid about excess nitrogen. its understandable but the plant still needs it to finish making flower despite what others have said.

Too much nitrogen means flower stop, so better let them starve a bit... you should have kept an eye on the nitrogen from flower week 1-3 😉

I would give nitrogen. You still need nitrogen in flower just at smaller amounts compared veg.

At this stage of flowering it’s normal… Adding more N will be useless, the roots are processing P and K

Your plant is shifting nutrients from lower leaves to the buds. It‘s not a bug - it‘s a feature. Would not worry too much.

nitrogen deficiency... I don't see any other symptoms so i'd try to increas N a bit while maintaining other levels as best you can. also based on drying patterns, your watering habits may be contributing. 1) fully saturate - 10% runoof or more if soilless. 2) wait for dryback and repeat. Watering is simple. Don't make it complicated. If that ever causes a problem, most likely the fault of drainage/aeration properties or not waiting for enough dryback. As long as that sounds normal to you, all is good in that respect.