Are My Plants Growing right?

I planted some seeds about a week ago today and they've grown pretty fast with basically minimalhelp from me. I used some regular Scotts potting soil with fertilizer mixed right in so i dont have to worry about fertilizer. The plants have been growing tall(about 3.5 inches) but even on my most mature plant, two leaves have shown and the height of the plant plus the weight of the leaves(about .5 inches long) are starting to make the plant lean over some. i've heard about plants growing too tall and not leafy enough and eventually dying so is there anything i can do?

You're soil will eventually kill your plant from nute burn. Never use soil that has fertilizer already in it. Your seedlings do not need any fertilizer the first few weeks. Transplant your seedlings to better soil ASAP and bury them a little deeper to stop them from leaning. Lower lights to stop them from stretching any more.

i had the same problem with my babies i had the light about 1 ft away big mistake they stretched and the stems were about 5in and they had just started growin leafs...so switch the dirt and lower your lights to about 2in from your plants dependin on how much heat they put out u dont want to burn the leaves...also have a light fan to strengthen the stems ...good luck