Something is wrong with my auto

Looks like over watering i would say a nitrogen deficency is in conclusive. Looks good though happy growing

Goodmorning Cy! To me it looks like your plant is a little bit overwatered. (At first sight) But then if we do a VPD math on your 28celcius vs 50%RH it seems like your at a high risk of plant stress/drying her out. I assume you ment the following: LIGHT ON: If we do 26Celcius (Leaf temp mostlikely is around 2 degrees lower than room temp) and than 50% humidity. your at a 1.87kPa. Light Off: if we're working with 21 room/19 leaf temp. on a 50% humidity you'd be fine. However the plant has to work with other indicators too. Try googling VPD and PFFD. to a happy grow!

Doesn’t really look like classic nitrogen toxicity to me. With N tox you’d usually see very dark green leaves and that strong clawing. Here it looks more like overwatering / root stress — the droopy, puffy leaves and overall posture point more in that direction. In week 3 autos are still sensitive, and in lightmix with only root juice it’s hard to actually overfeed nitrogen. pH 6.3 is fine for soil, so I wouldn’t chase that either. I’d let the pot dry out properly before the next watering and make sure you’re not keeping the medium constantly wet. Lift the pot—water only when it’s noticeably light. Also make sure you’ve got good drainage and airflow around the pot. Light at 75% under 400W could also be a bit much depending on distance, so maybe back it off slightly or raise it a bit just to reduce stress. She should bounce back once the roots get more oxygen 👍 Happy Growing Growmie🌱?

Fully saturating a pot is not "overwatering." That's what youare supposed to do. If it's a soilless context, you also want about 10% or more of that as runoff out the bottom. Then, waiting for appropriate dryback before repeating. Hopefully vast majority is drinking not evaporation caused as that would mean the pot size appropriate for the size of the plant. Regardless of the term.. as long as you are not watering too soon and not mindlessly running excessive gallons through it during an irrigation, you aren't overwatering. If these basic things ever cause a problem, it's the fault of the medium. Add more perlite or similar next time to avoid those problems. Coco is best with 33% of volume being perlite and something that holds more water per volume, like sphagnum peat moss, is best around 50%. In the end, they both have a similar gas:water mix per volume, which is the key. This was explained in earlier questions you asked. It'd be wise to adjust your watering practices. Best practices predate this hobby plant. Don't make what should be incredilby easy difficult. Light may or may not be too much. Information given is not sufficient to make a good guess. If the nodes at the top are too tight and stacking on top of each other, then add too much light to the list of probable causes. Efficacy varies by light, so 400w doesn't say much. On top of that most grow light manufacturer's lie about various aspects on their specification sheets. Regardless, what mattersis how the plant in front of you is growing. It may take more time and trial/error to figure it out, but once you get proper node spacing, it's good. At that point a simple lux meter can help you adjust the light in future to similar levels. if you use take note of hanging distance and power per stage of life, that works too.

Overwatered

Bad watering practices and too much light. Slowly water until you get runoff. Eg I'm growing in 12L fabric pots and give small amounts over a couple of hours. Usually takes 4 to 5L till I get runoff.

I think your light is way to intense for 3 week old, can you take a ppfd? My 240w at 3 weeks is about 25% at 200 ppfd and 24 inches from canopy, may sound low but my plants respond very well. I use lightmix and give first veg feed at 21 days

Hi, when do you Water the last time and how much? Lift the pot and check the weight! If it feels light you underwater the plant, if it‘s realy heavy the plant is overwatered then you Need to chill no more water till the leaves stands back in shape. To me it doesn‘t look like a nutrient problem here.

u thought wrong 😤 P deficiency and underwatering 👈

Grüße dich, Mit dem Stickstoff Überschuss könntest du Recht haben. Die Blattspitzen zeigen eine Krallenbildung , was darauf zurückzuführen ist. Von der Farbe her benötigt sie momentan kein Stickstoff und solltest es erst einmal weglassen. Vielleicht hast du ihr auch etwas mehr Wasser als üblich gegeben, eine leichte Überwässerung. Das Gießwasser könnte auch etwas zu kalt gewesen sein, was die Blätter auch schlagartig fallen lässt. Das wird schon wieder. Gib ihr Zeit und Liebe. Alles Gute Bro und viel Erfolg weiterhin. Beste Grüße ✌️😉

salut etn voyant tes fotos je penserais plus a un sur-arrosage. elle n'arrive plus a évacuer l'eau qu'elle boit pour cela que les feuilles gonfle et sur le poids ont tendance à tomber. verifie le poid de ton peau les pots de 20 litres ont du mal a sécher au centre. pur moi c'est cela jje te souhaite une bonne journée