You're using soil or coco?
Soil/compost the best quality I could find, and I have canna coco a+b which i used as nutes
You're using soil or coco?
Are the nutes for soil or coco? I would check this right away. Sorry of this sounds stupid but I thought you were growing in coco. If you can, list the soil type, if it has any added ferts, what's ur water PH after you added the nutes, what's your PH run off? It looks healthy to me, but healthy for a week old seedling not 4 week.

Ive combined your threads this is now your Grow Journal. Please keep all your grow Q's in this thread so we can keep up with you :thumbs:. Add the info as CGS was saying so we know what your starting with, thanks Buddy:tiphat:
toke