Burn

If that's the only nute you are using it's possible nute lockout that might be 2 strong causing it. Follow directions used as stated on bottle. If you have high drainage the PPM isn't really an issue once you mix up your feeds with flush in between, make sense? cut down to half, flush after every use. But flush all the same cause I'm sure that nute has everything in it +micros. You'd need to give more info and read it go through NPK, make sure has potassium the list goes on and on NPK is key but there's loads of little things autos need to be a success. Fems have longer growing life meaning they have time for mistakes and missteps. Autos not so much. I'd look into getting an line of these nutes. Look at mine and pick and choose but make sure you have the core 1s in there. NPK, and SULFUR, mg, cal, silica, potash, the list goes on and on. But again if what your using has got u this far it must be good. Try what I said, and don't look to those leafs to change or signs that it's getting better they'll stay like that more or less. Look at new growth. Good luck