Day 99- Put it In the flower tent 3 days ago; still waiting for signs of flowering. Gave her 1L of nutrient solution today with the piranha mixed in as well. Got at least 9-10 weeks to go.
I believe this is potassium deficiency.
K deficiency causes internal temps of foliage to rise and it causes the protein in the cells to burn and degrade. Usually happens on the edges of the leaves.