Possible iron deficiency Or stress due to topping and transplanting

hi guys, just wondering if any one can help me out

I have recently transplanted my seedlings in to their home soil of ave 6.5 ph

One week later I topped them

A few days after the top new growth has gone yellow

I'm thinking stress?? As I had a plant get slugged and it went yellow due to stress

Or could it be iron deficiency to too much watering after transplant??

And info appreciated

Looks more like sulphur than Iron.. you know what’s in your water?

Topping at that young of an age and a transplant is causing a lot of shock.

She’ll figure it out, just help her

Nutty sKunK said:

Looks more like sulphur than Iron.. you know what’s in your water?

Topping at that young of an age and a transplant is causing a lot of shock.

She’ll figure it out, just help her

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I gave her a foliage spray of cal/mag and looks much better today, but yes I think stress also

They are king Kong ( ww x gorilla glue#4)
Really looking forward to this hybrid