Curly and tear in leaves seedling

[V8]

From thr pictures you posted 3 days ago i would say growth is normal. Its allways slow in the start

V8

[Farmer Geddon]

At first, most of the action is below the surface. Once the roots are established, she'll take off like Jeff Bozos dildo.

[Greenboy94]

Hi. I gave them cal-mag form biobizz and mycorrhiza from mykos.

[Greenboy94]

Update: I bought a pH meter and noticed that the soil has a very low pH around 5.At each watering I measured the pH of the water and it was always between 5.8 and 6.1. I did not check the pH of the soil. I think they started to stop growing. I corrected the pH of the soil and now it is as in the picture.



what do you think about lights? 1200w at a distance of 20 inches. I don't think it's 1200w real. Maybe somewhere at 600w.

[CityDweller]

I would be hesitant to trust the probe and the app. There was an app mentioned the other day on the talk to test PAR and i checked it against my meter at it was only 60% accurate. Also, When it comes to grow lights PAR is more important than LUX.
The ph meter you are using is not accurate. showing 5 implies you have a low soil ph but a slurry test would be way more accurate. Even a test strip in a slurry test would be more accurate than the probe. Of course, getting a good ph meter is the best way to go considering the money you can save by growing great weed.

[Blue61]

^^^

I agree 100%.

[Greenboy94]

Thank you for tips.
Update: I bought a pH meter and the drained water has a pH of 6.5. I noticed that the top leaves are starting to turn yellow. I put calcium and magnesium and watering water always pH between 6-6.5. what is the cause?

[CityDweller]

Thank you for tips.
Update: I bought a pH meter and the drained water has a pH of 6.5. I noticed that the top leaves are starting to turn yellow. I put calcium and magnesium and watering water always pH between 6-6.5. what is the cause?

Soil or coco?
Soil you want to feed at 6.0-6.2 PH
Coco gets fed at 5.8-6.0. PH
The 0.2 ph swing is to make sure the plant has all micronutrients available.

[mpsj]

Thank you for tips.
Update: I bought a pH meter and the drained water has a pH of 6.5. I noticed that the top leaves are starting to turn yellow. I put calcium and magnesium and watering water always pH between 6-6.5. what is the cause?

The last place I want to see yellowing is on the top of the plant. At this point it looks like you have nutrient deficiencies, likely micronutrients or secondary nutrients be my guess. The deficiencies may be pH related or the plant needs some nutrients.

[Greenboy94]

I also offered them micronutrients. I think it's most likely because of the pH of the soil. I can't get it down anymore. Should I change the soil and flush with water ph 5.8-6 ?