Just noticed this on my plant along with a few other leaves.. does anyone know what it is? Ive got a gsc and a purple envy in scrog in the same hydro tank and only is on the gsc... im a few weeks from chop. Thanks!
Cheers mate. Doesn't make sense as i added small amounts of pk through all of flowering since forst since of sex (0.3ml per litre) then went full when the instructions said so. Shes a huge plant so maybe it just wasnt enough? My first hydro so still learning the ropes! Cheers bud