Hmm 2 tone leaf with side curling.......You don't have spider mites,,,,,,you have BROAD MITES!
Treat with a GOOD miticide.
Don't waste time with these suckers and use organic controls....You don't want "control". You want to KILL these....I suggest FORBID 4F Look to ebay for small amounts...The use of Doktor Dooms mite spray (pyrethrin) works but takes a few treatments..
Broad mites are TINY, about the diameter of a white fly leg! They attack at the leaf "stems" or "veins".......
Some people mistake this for Mosaic Virus.......BBZZZTT,,,,,WRONG! Cannabis can not get Mosaic virus of any type.
The BEST way to deal with them is the Forbid!