dying plant

so new one week old plant's new leaves are only growing tiny, because at the tips they turn a blackish purple? what do i do to stop this.
Sorry for no picture camera broke atm.

Sorry bro, I can't diagnose it, but this'll get you on the right track. Check the plant problem stickies here:
https://www.rollitup.org/marijuana-plant-problems/

okay i may need copper, how do i do that?