It does not say in your diary if you are feeding anything yet, but it does look a bit like burning, most probably nitrogen if you are feeding. Being haze type plants, they will need far less nutrition than either indicas or more common hybrids.
I have just answered a very similar question posted by curious jules "brown leaves - what am I doing wrong folks?" a couple of questions away from your question on this very page, and I suggest you might like to read what I wrote there, as it applies equally to your own question. This would also save me having to use my one finger and type the same opinion here on your question page. Good luck and happy growing!
Hope this helps,....... Organoman.