First indoor grow, second overall

Mg

Hey 👋 I do agree, you are over feeding… I found a page with most popular deficiencies & methods to help… more specific: I guess you are lacking iron due to to much nutrients in your soil. Maybe following link will help: https://sensiseeds.com/de/blog/wie-man-die-sieben-haufigsten-defizite-von-cannabispflanzen-anhand-von-blattsymptomen-erkennt/ Hope this helped 👊🍀

Hey Growmie, From the looks of that new growth turning yellow (starting at the tips and spreading), it seems like you're dealing with a nutrient issue, but not from underfeeding, more likely over-fertilization or a pH imbalance causing nutrient lockout. What’s likely going on: Nutrient Burn: The fact that it got worse after upping the feed is a strong sign you're overfeeding. Burn usually starts at the tips and creeps inward. pH Lockout: If your pH is off (especially too high), your plant can’t absorb key micronutrients like iron or zinc , even if they're present. Iron Deficiency Symptoms: Yellowing new leaves with green veins is classic, and again, often caused by pH issues, not a lack of iron itself. What you should do: Flush with clean, pH-balanced water (6.0–6.5 if you’re in soil) to clear out excess salts. Check your runoff pH if it’s out of range, that’s probably the root cause. Ease off the nutes for a few days and monitor. Next feed, go with 1/4 to 1/2 strength max. Make sure your temps and airflow are on point. Environmental stress can make it worse.You’re doing the right thing by observing and adjusting, just gotta dial it in. Keep a close eye on the new growth over the next few days; it’ll tell you if you're back on track. Happy growing!

Oh looks a bit high to me. In combination with purple stems on fan leaves this could be the start of a lock-out. Try to lover your ph a little and see if it gets worse or not. If they start curling up it’s most likely from too much light. Good luck 🍀👍 👊

Looks to me like burning, slightly over fed. might need to lower the EC just a tad and or get more runoff. About 15% of the pots volume should do. water in slowly as not to create water paths where it just flows though and does not soak in. Some plants get purple coloration, I find indoors a lot of my plants do. I think its part of the light spectrum/source I use "LED". I have tried dosing with Mg and S as it is said this is a sign of them element lacking but that is not the case. PH is on point for me. others may think its to high, EC does seem a bit high to me, I'd prob knock that down to 1.4-1.6 but If it can handle it then maybe it likes more. CANNA makes good products from my understanding, I have yet to use them myself but heard heat things about them, I do use their substrate coir bricks. a+

These are classic burns from excessive fertilizing... as soon as you see that the edges are just starting to turn brown and look burned, the plant is warning you that you have given it a little more food than it needs.. yours showed this a week ago, probably, but you probably didn't pay attention, in the beginning they don't get so burned.. in such situations, you don't feed until the next two waterings, and later you just reduce dose of fertilizer and feed every second or third watering. This is not something that should worry you, at least I wouldn't, throw out the food for the next two waterings and watch how the plant behaves, that way you won't be able to harm it any more, and if there is a defect or something like that, it will continue to spread and show, which you can fix at any time... this is not locking, if it was locking your plants would be on the edge of life and death and they wouldn't look anything like this.

I count 12/12 days. First pistils appear in a matter of days so it's irrelevant if you ask me. Important is that you keep the track of your schedulle and certain cultivar lifespan. Certain phenotypes will always surprise you so observe the plants and do not stick to what breeder may promising. Most of that is bunch of bullshit. Nature operates different than theory. Good luck

its your call. I switch it to flower in diary as soon as I switch the lighting schedule. But if its autos I do it as soon as I see signs of flowering beginning but I know it really flipped about a week or two before that its just I have no control over it. With photoperiods they will show flowering signs a week or so past the lighting schedule change. But again, your diary and your call how you want to do it. Does not really matter its the harvest thats the cream of the crop in this game.

agreed with einamio