little help needed

One of my girls is showing a little greying/whiting around the edges of the leaves I sprayed a very light soloution of biothrive grow andd cal+mg this morning hoping that will fix'er but I'm not to experieced in deficencies and what not so if sombody has had or is having the same kind of thing let me know what the fuck is going on!! Its only happening on this one and one otherr week old seedling I put them outdoors during the day and under flouros at night the soil is just an "organic seeddling starter" from peavey mart... And I know I could probably find this info out myself but I'm sorry I have a lifee working everyday and it takes days to do anything on my phone, and dint post if you don't know what the fuck your talking,,, thanks!!!

Sorry about the pic quality, my phone is a piece of shit.. Should be enough for sombody to recognize what's wrong though I hope!

Nobody knows what this is? After I sprayed it with a weak solution its perked up

Come on nobody knows? Now 2 more seedlings are showing the same symptoms

you need better soil man, you have no perlite in there to air it out faster its really compact on your roots without it

also appears your humidity might be little low for this stage get it up to 65 - 80

two years ago i gifted my buddy some babies to throw outside. i gave them to him in 1 gallon black pots but instead of transplanting them into a bigger container or dropping them into the ground he left them in the 1 gal pots and set them in his backyard. the day was pretty warm and even though he kept the plants from drying out at the end of the day around all the leave tips was white. we transplanted them into the ground when i saw how they was but most of them died off before the next day came. my guess is the roots boiled in the little black 1 gal but i'm not positive.

Yeeah I will transplant into promix with some otheer goodies when I put them outside it was just the only soil I could get at the time its really weird though how the edges and tips turn white... I keep them outside for the day undder flouroos at night and the white fades when I bring them in could it be something to do with low temps during the day?

Its only about +10C during the days here