Sometimes plants can just be finicky, I just had one die on me that I had done absolutely nothing different to then any of the others over the last two months, similar symptoms as you have but in early veg. stage. Fine one day the next day I was like WTF?
Purple Daddy Reviewed by Purple Daddy on . One plant in tray with aggressive leaf curling?!?!?!? I have a 4 x 8 tray with several strains in it. One plant has very bad leaf curl and the rest are fine (even the others that are the same strain). System: 1000 watt hps (bulbs need replaced) air cooled (can touch the glass cover) Botanicare Nutrients (PBP B, Liquid K, CalMag, Aqua shield, dash hydroplex) PPM 1500 ph 5.8 (PPM up from 1350 this res change...yesterday) Used ZHO and Voodoo at start Temps and Humidity stable using Sentinel EVC2 (68-88 and less than 55%) 1 gallon smart Rating: 5