Yellow Stripe?

Hey guys, it's about a week and a bit since I planted the seed, and I have a question.
What are these yellow strips in the leaves?

I'm not very experienced myself but I'd say your lights to close may be burning it slightly, looks a little young for deficiencies coz I don't think you feed them nutes till flowering really (bear in mind I've only grown autoflower strains) unless your giving them nutes now and you over did it a bit or it could be over water or underwatering that is most. Likely the problem. Mine did the same but they turned out fine a bit later on

Anything else?

Light burn

How close are your lights? what type of lighting.

what soil are u using?

you haven't added any nutes yet right?

I'm using a 23w eq. 100w cfl about 5 " away, I'll try move tgem back a bit

I moved the plant forward a little so the leaves don't burn.

take that grill off your light mate, it's blocking the light :/

I'll try, I'll do it now

What soil are you using?

Don't know of my head, I'll check when I get home. Do you have any recommendations?

Nothing wrong - it's still a baby and needs a little more time to develop just don't over water - which is a common mistake by many growers - to young for nutrients unless you use a tea