What's wrong with my baby?

[chucky211]

went in to check in kids and found this. She is wilting and turning brown on the tips. all other babies are fine, just her?? any ideas what this could be? here is the link to it i cant get it to add image here?

sick kid

 

[TheFertilizer]

Going to guess it's nutrient burn if you've fed her. Little small to be fed right now, you probably wanna stick with plain water for another 2-4 weeks or until she starts looking hungry (bottom leaves will start to yellow)

 

[chucky211]

so havent given them any nutes yet, just ph water. i went to check on them today and they all look funny, shiny leaves starting to curl under. could i be burning them? i got some under a 600w MH and some under 1000w MH, the 1000's are a little more shiny than the other side. i dont know, room temp is 76