Hi pall ive just had this myself on my white widow in veg , i wasnt letting chlorine evaporate out of the water before i added mi nutrients , this was throwing the ph out n I filled a container with water left for 24hours added nutrients n ph.d to 5.8 , got my temp at 70 and humidity to 75 ...
Ive had this myself on my first grow i thaught if i veg them for 8 weeks ill only need 3 plants insted of 6 and if five oww turn up its jus three plants. so my plants were near 3 ft when i put to flowering, In flowering I created a 18degrees.c drop in temp to encourage stem stretching on week 4...