I love that MG soil less mix. Good stuff. Wouldn't use it for seedlings, as it has fertilizer, but after a few weeks, boom. good shiznit.that moisture control stuff, is that the 90 day stuff??? if so it may be too much for those babies..... how are the others in the pics looking???? it may just be the plant is sensitive.. if the others are doing ok i wouldnt change anything..... and that one plant may cause you to react unnecessarily causing damage to the others... jmo..