A problem maybe?

I have two strains going, shark attack cbd, and purple deisel. Question I have is, the cbd strain is bushy and growing well, but some tips look burnt. The purple deisel is doing just fine. Maybe the strain? Idk. Any pointers would be greatly appreciated. The pic provided is the cbd. Thanks.

What soil is she in? Have you fed any nutrients yet?

Organic soil with pearlite, and no nutrients. Yet.

Check your PH, wood chips can be a bit acidic.

Will do. Thank you guys for the input.