2nd grow from last

It is nothing to be concerned about. The cotyledons only purpose in life is to protect the growing tip as it pushes up through the soil. After this they, shrivel up, die and fall off. They have no bearing on the health or growth of the plant. The serrated leaves are the first true leaves, the rounded cotyledons are only "protection covers" for the growing tip and play no part in the plants life once it emerges from the soil.

I was trying 3 in one pot then I cut down 1 and left 2 and the results was 108g so if I would plant one I would get a bit more about 150g Amnesia Haze so its now worth it dont waste your time brother and stick to one princess per castle, happy growing and stay safe 😊👊👍

Buenas , los ventiladores durante todo momento ,no nos interesa quizá el aire directo si no una brisa que mueva las hojas con suavidad , esto incentiva a la planta a sacar un sistema de raíces sano, y lucha en primer plano contra algunos patógenos.

The fan on the light is just to cool the light down by pushing the hot air out - this will not give any good airflow for your plants, you need separate fans for them.

No worries you welcome, good luck and happy growing pal 😊👊👍

Get free APP to measure LED Lux ( https://play.google.com/store/apps/details?id=com.doggoapps.luxlight&hl=en_GB&gl=US&pli=1 ) Light • Clone and seedling stage: 5,000–7,000 lux • Vegetative stage: 15,000–50,000 lux • Flowering stage: 45,000–65,000 lux Ph Soil pH range: 6.0–6.ph. 6.5ph is sweet spot Temp Temperatures of around 20-25ºC with a humidity level around 65-70% gives good results for cannabis seedlings. Humidity levels around 60-75% deliver solid veg growth. Perfect EC level for cannabis plants is around 0.5-0.8 until around 13/15 days after germinating. This should be progressively increased to 1.1 towards the end of the growth period. During the bloom stage you’ll need to increase this, as your plants will need more nutrients. You should keep the EC between 1.2 and 1.5, keeping it there until the fattening period, where you should increase it to 1.8/2.1 – this is the highest it should ever be.

15C is too cold even when lights are off.. that will potentially impact cell biology/chemistry. you need to do a little trial and error to learn what intensity you need to provide to prevent stretching... too much light will stunt the plant and be just as bad of an outcome. if those new nodes stack on top of each other, it's too close / too strong (dimming or raising light accomplishes same thing for the most part). A seedling may even fall over if the light is too strong... trying to put more distance between it and the overly powerful light relative to stage of life cycle. anyway, the coloration in the blurry pictures is probably caused by the 15C environment. You'll see "autumn" colors in cold weather because the plant isn't able to process things properly at those temperatures.

Hey,i dont see any question here so maybe thats why no one answer,to be honest with you i failed a lot of times before with photoperiods but because of my lamp witch was blue with purple witch was chinese shit 400W but didnt do shit,i lose a lot of time by using one of those so hope you dont use any shit light..Hope the best for your grow mate!