Need a little help

Hey guys need second opinions and advice on how to combat this, it’s the only plant like this out of 5 all the same strain from seed blue cheese, soo zinc? Magnesium? Still trying to better my self in self diagnostic just after some second opinion, leafs are also curling at the edges and tips are beginning to burn a little (I don’t think the Burnt tips is nuts burn) thanks guys !

Sorry forgot to add they are in coco no perlite, being feed Goliath Garden of Eden (veg cycle is “Adam” “eve” “lush”) along with CalMag+iron

Temp, RH, EC/PPM PH? Feeding to runoff? Distance from light?

HydoDan said:

Temp, RH, EC/PPM PH? Feeding to runoff? Distance from light?

Click to expand...

21-28 light on lights off, ph 6, I don’t take ec or ppm, feed till run off every feed, ppfd readings are around 600

Novicegardner said:

21-28 light on lights off, ph 6, I don’t take ec or ppm, feed till run off every feed, ppfd readings are around 600

Click to expand...

How do you know what ppm you are feeding ?

Budzbuddha said:

How do you know what ppm you are feeding ?

Click to expand...

I don’t i jisy follow reccomended doses from the nutes and if they look over fed drop it down if they look hungry buff it up

Are you feeding at least once a day?

MickFoster said:

Are you feeding at least once a day?

Click to expand...

Yes most the time 2 times

Thanks for all the constructive help!