Lime green/yellow top leaves

Hello all, first post ever here
Please advise,

i have yellow/lime green spots on the latest new leaves and some top leaves. These are Skywalker OG. Please see pictures. Thank you all

Conditions:
Stage: 5th week Veg
Soil: 75% Foxfarm 25% Coco
Light: Max Hydro 3000 (18-6 schedule)
Temperature: 82 day / 75 night
RH: 55%
Nutrients: Foxfarm Grow Big, Calmag, some Maxigro.

Hey bro did you sort your issue and what was the verdict?

It was just a cal-mag deficiency. It was green and lushing in 2 days. Thats is by foliar feeding with 5 ml/gallon at pH 5.9.