White Bhutanese 》》by Mandala Seeds

Turns out it was high humidity

Seems like a Potassium (K) toxicity! - Lower leaves wilt and curl upwards with yellowing spots, top foliage developing interveinal chlorosis and tip chlorosis. Try taking out the "B-52" out of the solution and lower the "Bloom" and "Micro" by about 20% for now until the plant shows signs of of healthy growth. Don't forget to check pH and for hydroponic I'd suggest keeping it at the 5.5 range. Hope this helps! Good luck and happy growing :)