First ever grow attempt

MAIN UPDATES: Nutrient Deficiency last week, thank you to "Roberts" and "Accystoner" for helping to identify the issues. Light intensity increased as plant didn't seem stressed by other factors any more, so felt the plant could handle it. I'm trying to constantly tow the line between stress and damage to get the plant to produce optimally. Lux raised from 25,000 - 35,000 range to a 40,000 - 50,000 range. With the light spectrums being used, the PAR works out at around 1000umols/s/m2. DLI around 62 CLIMATE: 31'C/ 32'C ambient air ~ 55-60% RH ~ 29'C/ 30'C LST (plants are responding well due to high Co2 levels) ~ Leaf to air temp variance of 1-2'C LIGHT: Red/Blue/2x full spectrum CREE COBs (+IR and UV supplementation) At plant canopy = PPFD 1000umols/s/m2 ~ Lux 40,000-50,000 ~ Daily Light Integral 55-65 CROP CONTROL: (Same as usual) Infection control practices i.e -PPE, Alcohol Hand wash -Gray room outside tent, -Carbon filter -HEPA filter -Plasma Ionizer -Inline UV-C germicidal bulb Update: Now using an additional higher powered (UVC) 253nm & 187nm bulb, to disinfect the gray room outside of the tent once a week for 30 mins. The Ozone (o3) gas that is produced is then directed into the tent to further control any unwanted pathogens. The gas is then exhausted outside into the open air. Ed Rosenthal -Zero Tolerance organic pesticide on hand if needs be too. Hopefully to avoid ever needing chemical pesticides.