Yeah I had it in a McDonald's cup and transplanted early because it wasn't doing well in it. (Maybe the styrophoam or some chemical in it) this was my next size upWhat is the pot size and strain? A larger pot size will make a plant from seed initially grow slower due to root tap. You usually want to start seedlings in party cups or a pot equivalent in size.
With strain. Some strains grow really slow. Some grow really fast.
These are some ac/ dc x mr. x. At about 5 days from sprouting.
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Yes I let it dry till I can get about 2" of dry dirt on topAre you letting the soil dry out a little bit before watering again? Some will grow faster than others.
You transplanted a seedling? If so that will be the problem. Not enough root mass to anchor into the medium for a transplant, youve disrupted the root growth formation. Should sort it self out over the next week or 2
How big was the cup? If you have that much root mass then your plant should be bigger than it is. leave it and If it isnt showing signs of growth over the next few weeks maybe think about starting over. Maybe purchase a light airy soil mix some perlite etc for next time. But fingers crossed u should be ok