What it wants from me again

Droopiness might be because of water damage or insufficient light, try lowering the lamp to about 40cm from the plant, and for watering try a 3.5-4 liter water or until there's about 20-30% of the irrigation as runoff! Also I'd try going easy on the "micro" and using only 1ml/l at this point and lowering the cal/mag to about 0-0.5 ml/l (cal/mag is usually only needed when deficiency shows) - a little nutrient "burn" is showing at the bottom of your plant indicating it might be PK abundance! Hope this helps! Good luck and happy growing :)