First Grow Issues

[OttoGelato]

First grow:

In fourth day since flip
CoCo/Perlite 70/30
2 strains - Gelato, GrandDaddy Black
15 plants total
Feminized seeds dropped on Oct 18
Auto Fertigation w/60 gal res pumping to 10% DTW 4x daily
AN Coco Conoisuer Bloom, Dutch Nutrients Growth Burst and Diamond, Carboload.
EC 1.9
PH 6.0

Plants seem mostly healthy, but a couple are showing some signs of deficiency or excess, I’m not sure which.

One or two plants have a single burned fan leaf. One or two others are showing rusty purple patches on their biggest middle fan leaves.

I don’t want to mess with NER when plants seem to be mostly ok, but I don’t want this progressing/escalating.

Any insights from more experienced growers would be really welcome.

Thanks

[alltatup]

Otto, if you haven't flushed your plants, do so: you hay have nutrient lockout. They really start to need flushing bythe time you switch to flower, and they actually love the break from the nutes. flushing-sick-cannabis