leaf color seems odd

Just put my girls into flower 4 days ago, changed nutes to flowering nutes with water that first day, plain 24 hour water 3rd day. Now leaves are lighter color on inside. Does not seem to have affected fan leaves. Check my picks out and let me know what you all think. Thanks!

your plants aren't fully in flower yet and still phasing over from a veg state to the flower state because of that they need less nitrogen than veg but more than flower
you should be able to add a little of your veg feed in the next to up the nitrogen levels a little
it's nothing to worry about and will recover easy enough over the next few feeds
also just because you have a slight deficiency don't put loads of nutes in next time, it's easier to add more than take some away

OK cool, that was along the lines of what I was thinking cause of the nute switch. Thanks Fluff.

MoMoGrows said:

OK cool, that was along the lines of what I was thinking cause of the nute switch. Thanks Fluff.

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Did you happen to change your lighting also?

No I didn't, 600hps throughout.