Save my seedling please

My seed was planted in fox farms ocean forest. It is about 2 weeks old. I havent added any nutes at all. Temps staying around 75f. Humidity is good. Under 2 23 watt 100 watt equivalent CFL 6500k . I have noticed about 3 days ago the leaves edges are starting to turn yellowish brown and I have no clue what the problem is.i have been phing my water to 6.5 for the past week and transplanted 3 days ago. Please help. Sent from my SM-G955U using Grasscity Forum mobile app

I'm going with the soil is a little hot, thus some nute burn.

Sometimes the elves that mix the soil get into Santa's head stash and hot batches happen. Damn elves!