possible nute burn

just wanted to see if someone could take a look at the pic and give a second opinion on what could be wrong with this one plant its the only one of twenty thats doing this. I read alot and it sounds like a possible ph fluctation or nute lock but again its the only one doing it. all soil was premixed together for all the plants so no difference there. all are getting the same water ph'd at 6.8. 25% strength MG bloom once a week and flushed every week at mid week (Wed).

im not no pro but i'd say there's definitely some nute burn on the smallest leaves as the tips are brighter than the rest if the leaf as for the warping of the leaf/s clawing that could be over water (if your in soil) or ph imbalance or nitrogen toxcity there the three i can narrow it down to of tthat helps ?

are you running multi strains ? if so then all strains are diffrent your mix could be to strong for this one , or ph imbalance etc more info and a shot of the who plant would help

on second thoughts a clearer pic would help i cant make it out looks all yellow

ill take some better pics when i get home this evening sorry i know pics with the lights on does not help or rather makes it difficult to see the colors. and thank you for your response. the burns are like a greyish color and the leaves with the burns are almost crispy to the touch. they are all different strains nothing special just some bag seed i was trying to see if any were gonna turn out good enough to mess with further. i forgot to mention they were just put in to flower 4 days ago. temps are all around 72 in the evening and peak at about 79 at the highest, humidity is ranging between 25% and 45%. oh and its all under 15 23watt 2700k cfls with mylar surround and over them with constant oscillating fan. bulbs are maintained within 2 inches of tops and sides of plants.