Expert advise needed

What’s going on here?
Upper fan leaves are getting little brown/orange spots and plant is going slightly yellow in colour from top down

I’m growing in 10 gallon pots using biobizz all mix with biobloom fertiliser, under 600w hps
 

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What’s going on here?
Upper fan leaves are getting little brown/orange spots and plant is going slightly yellow in colour from top down

I’m growing in 10 gallon pots using biobizz all mix with biobloom fertiliser, under 600w hps

You only need to have one thread going, no need to post the same everywhere.
 
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