🌱 The temperature is really high, so that probably isn't helping. Do you see symptoms on the leaves closest to the light? If so it means you either need to bring down the temperature, or possibly raise the light up a few inches to help relieve the stress. Did anything different happen right before you started noticing problems? (new nutrient, supplement, etc?)
Also, have you been checking the pH? That is the #1 cause of nutrient deficiencies. 🌱