Light green leaf color

[$Spliff23]

Entering week 3 flower day 48 Sundae Thumper and 3 of the girls have a lighter green color - hit them all with calmag and wormshit yesterday - use RO. What do they need?

 

[Lil Dab]

I suspect too much N and maybe Ca and if the calmag makes things worse that would confirm it

 

[Heart of flowers]

Have you watered them enough from start so that they could and now at this stage can handle the light you provide them?
They seem to be lighter in color naturally against the 3 in the back which looks to thrive, so I think it’s to much nutrients and light for the 3 in front.