Hey Growmie,
She's certainly not lacking nutes, it seems as if she has nutrient burn, those tips being burnt is an immediate giveaway. The conditions are going to be the blame for that, a low humidity level causes plants to drink more resulting in “nutrient burn”, which gives the leaves tips a yellow or burnt color. Hopefully, this was helpful, and remember "Happy Growing" and "Free your mind one puff at a time".