Quote Originally Posted by stinkyattic
Those look VERY small for 3 weeks from seed. They should have at least 4-5 nodes by now. They are also stretched because they don't have enough light.
Pre-fertilized soil is appropriate for a 3 week plant, but only if it is matured past the seedling stage, which those aren't.

the 1 on the left is 4 inches long and its 3 weeks but the 1 on the just sprouted 2 days ago