I’m no auto expert I just use half of what I would normally use for photo periods and have had pretty good luck with that . Your plants will tell you what they need . I hardly give any of my autos over 600 ppm I have grown some that were hungry though also ph is pretty important in coco I...
Lots of guys already hit the nail on the head first your plant looks pretty small for 20 days as an auto . Autos only use less then half the Nutes of photoperiod plants. I learned the hard way over watering and over feeding autos will leave you with small plants and even smaller yields
The...