Yellowing

[Bubba kush]

I have a couple plants that are doing this. You think light burn or copper

This is my first time running Spydrx plus and I have them kinda high

Any recommendations please

 

[Bubba kush]

I know I have some nut burn so maybe that had something to do from it

 

[1diesel1]

Phosphorus?

 

[MIMedGrower]

Too much pk?

 

[Highkev]

Maybe I’m wrong but I would stop feeding and hit with a tea and water next two or thee feedings. How high are your lights? What’s the par readings? If they are higher could it be your plants are working harder taking up nutrients faster resulting in burning your plants again I could be wrong just a stab at it

 

[Highkev]

 

[Kingkola]

I'm thinking could be a lock out from calmag hit it with some wait a few days.... Check pH ppm and then supposed some phosphorus?

 

[Dirtbag]

What's the room temp? And do you know the temp of the leaves at the top of the canopy?
Looks at first glance like a bit of iron deficiency, possibly potassium def too. Could be from overfeeding causing a salt buildup and lockout, hard to say. Do you use Cal mag by chance?