dinafem blue widow

Hey guys im in a small cab with a 125w dual spec cfl.
Im just doin the 1 plant this time topped a dew times (get about 8-12 cola's i should be a happy monkey)
She's on day 15 from sproutin now in veg

Im gettin yellowing on seed leaves?
Wots this all bout??

Its bout day 18 from seed
She's had her 1st quarter strength feed mixed