Problem with the pH of nutrients or VPD

"Deficiencies develop on new growth first because these nutrients cannot be relocated from older tissue." older growth can require high amounts of calcium than new growth. and if caused by lock out can show minor symptoms like seen here. could have already corrected itself by the time the new growth appeared as well. theirs always a few different angles to look at things. and what defines old growth. at what age does it become "old" and when does a new shoot stop becoming young.

Some people needs to remember basic things. If wording not enough, easy table is available in this article too. https://www.athenaag.com/blog/cannabis-nutrient-deficiencies Or NobodiesNotSteve will give you wider lesson ;)))) No calcium will be on older leaves first - fact Its ph !!!

Just because a leaf is old doesn't mean its not still growing and requiring calcium, and therefore showing issues.. Immobile nutrients can show symptoms on lower leaves too.

Calcium on old leaves :)))))) Nice joke about immobile nute .

I wouldn’t worry too much about the purple/pink stems alone. That can be genetic or a response to strong light/stress and doesn’t necessarily indicate a deficiency. Topping and light defoliation shouldn’t cause this either. The orange/brown patches are more interesting, but it’s hard to diagnose from this picture alone. I’d check root-zone pH and EC first rather than adding more nutrients. “Recommended dose” can still be too strong depending on the plant and conditions. If the new growth looks healthy and the damage isn’t spreading, I’d avoid making major changes and just monitor it for a few days.

This is not a ph problem really. Purple stems are from the genetics mostly, and light stress.. A lot of strains do that. I wouldn't worry about that. The orange spots do look like calcium deficiency. defoliation wouldn't cause those issues. That is not a fertilizer burn either. This could be cause by lockout from the wrong balance of fertilizer more so incorrect ph. if the ph is off its not wildly off or anything. it should be easy to correct. the spots i saw earlier looked different like sunscald from water droplets. Cannabis uses a lot of calcium its hard to overdo it. Looks lie potassium levels could be low too. Maye just a slight overwatering issue. I notice my plants have issues like this when i don't have a constant watering pattern which will swing the ph slightly in of itself.

Hi Growmie..... I would check the pH level and adjust it if necessary...... A value of 6.3-6.7 would be good..... The stems changing color shouldn't be a problem....... It could be the genetics, low temperatures, light stress, etc. I don't think it's due to topping or defoliation..... It'll be fine 👍 Good luck, Growmie!