Are you checking your pH?
I haven’t in 3 weeks I did when I first planted them into the soil
Fox farm soil is very hot for seedling , had the same exact issues . I learn to layer my soil in stages so as the plant grows through the soil it does not burn as easy , and always watch your run off . Remember your soil is a buffer , so if your water goes in at 6.8 , it can possibly comes out at 5.8 , so always check your ph going in and as it run off , adjust accordingly but not to sudden , it can make things more complicated . But determine on your size pot the plant is in now , it’s possible you can flush it thoroughly but not drench it to bad and give chance to revive from the watering flush and transplant it to the next size pot , layer your soil medium with fox farm being your very bottom layer about 2-3 inches and maybe a non ph soil medium like coco coir mixed with perlite as you know for the top layer and just keep a watchful eye on it and just keep it watered properly , no nutrients for a few weeks until the plant ask for them , and it should revive depending on the strain and how much stress it can handle .
I agree about foxfarm being hot for seedlings. Whenb you start seeds it should be in a seed starter mix, or something without nutrients.
The happy frog brown bag works great for seedlings , or super mix and mixed coco with 5% more perlite and layer your soil from bottom to top using fox farm on the bottom and the coco mix midway and on the top will give you a 90% chance of seedling grown 3-6 nodes with just plain water .
Thanks for the info guys I will flush them and get them in the new soil mixture
Hey latewood I need help of what intake fan and exhaust fan to buy with carbon filter ?