Light Patchy Yellowing help please

[Pebkc]

Hey guys any ideas what this light yellowing could be please, Gelato Auto.
2 weeks old,
BioBizz Light mix in the middle of pot (4 inch pot size) then the rest BioBizz all mix - 15L pot
No nutes or anything added at all just water (with moisture meter)
Soil: pH 6.0
Light: - Attis 200W - Lumatek - 15 inches away / Plus Sunlight

Thanks.

 

[MaD BuDz]

watering schedule? and ph?

 

[Arthur]

Could be a calcium deficiency starting, under LED cal/mg requirements go up. But it looks a little odd, almost genetic. Called variegated.

 

[Pebkc]

Could be a calcium deficiency starting, under LED cal/mg requirements go up. But it looks a little odd, almost genetic. Called variegated. View attachment 1212652

Hmmm ok thx for input Arthur, I'm going to leave it & see what happens, as I forgot to mention I have 2 others (different strains) in exactly the same soil & not a problem at all, will look into Variegated,
thx.