LEAVES STEM RED TOPSIDE UNDERSIDE NOT!

I don't think its anything to worry about. Happened to me on many grows. And clones that I have grown inside stay red and the ones that go outdoors do not. Same feed and soil only difference is the light source. Plant leaves look healthy. Maybe to much N a the pics make em look very lush but w/e if the plants happy and growing well then I'd leave it.

9/10 times this is just your light fixture...when it is just the lights it is more like a tan than a sunburn, this is the plant putting on sunscreen where it doesn't need the intensity/spectrum combination wrote a primer a while back on when this a problem and when it isn't

Hello mate, looking your plant this isn't a lack of light, i think the reason is linked to the big temp difference between the day and the night.

CAPS LOCK IS A KEY ON A COMPUTER KEYBOARD THAT, WHEN ACTIVATED, CAUSES ALL TYPED LETTERS TO APPEAR IN UPPERCASE. IT IS A TOGGLE KEY THAT LOCKS THE KEYBOARD INTO CAPITAL LETTER MODE UNTIL PRESSED AGAIN, AT WHICH POINT IT RETURNS TO NORMAL MODE. MOST KEYBOARDS HAVE AN INDICATOR LIGHT TO SHOW WHEN CAPS LOCK IS ACTIVATED.

Einige unserer Pflanzen hatten das bisher auch. Ich denke das es eher an der Genetik liegt. Du siehst es bei uns im Diary der Sexbud in der 11. Woche zum Beispiel auch. Wir hatten bisher auch keine Probleme wegen den roten Stängeln bei unseren vorherigen Pflanzen. Wir fanden es eher schön.

The portions exposed to LED turn red often. Red petioles can be a sign of low P, but if it's only happening to the petioles exposed to intense LED light, probably not related to P-levels. I've tried amping up P before to avoid it, and it is never avoided. Supposedly this is limited to LED, but i've never used an HPS or CMH. Dangerous to rely on word of mouth...

anthocyanins the plant is producing to protect the stems from light. I think its the genetics. id say about 50 percent of my plants do this. I don't worry about it at all.

Can sometimes just be genetics. Can sometimes be triggered by cooler temperatures or cooler waterings. Can sometimes mean a lack of potassium (I think). But I wouldn't worry too much if everything else looks and seems healthy

Ich bin erst seit Kurzem hier. Mir ist aufgefallen, dass in diesem Bereich der App eine kleine Gruppe von Leuten mit absoluter Ahnungslosigkeit Ratschläge erteilt. Die Chancen auf eine Diagnose sind gering.

LEDs just seem to do that sometimes. My plants do the same thing to no ill effect.

Yeah it's like sunburn for plants, nothing to worry about

I think that's from the light, my plants have this at the top of the plant. Maybe strong light, with lower temp.