Autoflower help

Rust spots on leaves an fan leaves clawing can someone help?feedind all plants the same nutes in equal doses but this ones giving me a problem i feel like it's ruining my yeild because my other autos the same strain an age ar light years ahead of it!

Without more details I can't give you a definitive answer, however. judging by the random splotches displayed on the leaves accompanied by the bright purplish/red stems my best judgment tells me you have a phosphorus deficiency/lockout.
What pH do you set your water to, how often and how much do you water?
I realize your other plants are healthy but some plants are more picky than others.