New grow, some kind of deficiency?

Using FFOF, Brown leaves that curl upwards? Is this "praying for magnesium?"

By new grow...do you mean seedlings? They should not be started in a full strength soil like that. Just a wild guess...

And how is anybody supposed to help you with such scanty info???
JD

Every other plant has been fine so far. I'm using FFOF to keep at least some minerals and nutrients in the soil for the first month. they were started in a Rapid rooter, and transferred. Lighting for now is a 4 tube flouro. Just water has been added, but for some reason, this seedling is stunted and brown. I cannot for the life of me figure out how to post a picture. I keep trying, but nothing happens...

Looks like the roots had a hard time making it into the soil.