what happened is called damping off,new growth looks good,keep in mind if you get your feeding right ,they will be alright,that soil has enough in it to just use water,it is made that way as is the air in a bag of soil,i have some jedi that i was about to pitch too,shit in one week they just busted out,so dont let this deter you from growing ,keep it as a lesson curve,look at it like a tree,tree is 15 foot tall ,tap root to suport that tree will be half the length of the tree standing,with pine trees this is a fact i dug a tap root out of my garden that i didnt know of for 2 yrs,when i stuck that plow in there and was plowing and all of a sudden bam,damn near threw me off the tractor,but it took me a additional 3 yrs to pull that root up with my plow.
so with all that in mind dont feed it nothing but 6.5 ph water,stick your finger in there till you get to first knuckle if you pull a finger out with soil on it ,give another day. this isnt really a mistake as it is just being anxious to grow your own medicine .takes time on some strains,most folks really dont have the patience for seedlings ,thats why they buy clones,so they dont go threw what you are.when you master what you are doing now,you want turn back ,so ease up on the nutrient and water when needed.
im gonna give you a tip,when you want to germ you some seeds,get a solo cup pop bunch holes in bottom,for drainage,fill cup half way,ya half way,what goes on here is this,the plant will be little and piss you off waiting for it to do something,but a seed is just like the plant,the plant wants to reach for the sun,the seed taproot wants to hit the bottom of cup,when it hits bottom of cup,it then starts thickening up the stem,keep your light close but dont burn, to slow stretch,it will be a little thin stalk shooting up out that cup no bigger than a pencil lead,when you know it has hit the bottom of cup,you can put more soil in there,until your ready for transplant,then transplant up to 1gallon pot,use
mykos for transplanting,but what your doing here is building a massive root ball,i go from solo to 1 gallon then to final pot,i know were you coming from friend,everyone say go read a book,you get on a site or 2 and all you here is research,thats what your doing now ,problem is the trolls showup and then you dont get nothing but something about another subject and never get a answer,find you someone that you are impressed with and let them teach you how to grow friend,everyone had to do the same,some think they were born doing it,just scroll on down the page when you see this,there are some great gardeners here and dont let the trolls hog you and piss you off,weed is here from the beginning of time and im glad to help anyone if i can,spread the love of your knowledge and dont fall for the dead beats that have nothing better to do.
grow the herb friend enjoy yourself ,dont get frustrated and learn,if you get one joint off that bitch ,you did it and dint pay for it ,and it always taste best when you do it,dont matter what anyone else thinks let them go get one of them 450 dollar bags to brag to there friends. tromp on threw the fog and rise my friend ,hope i helped you out a little bit