Help yellow/purple leaves

hitch420

Well-Known Member
1 month into 12/12400w hps
Grown in a soil/perlite mixture.
Nutrients:Bionova organic fertilizer
The top of the plant is in good health but lower down the plant the fan leaves are looking abit poorly
hitch420-127732-albums-problems-picture844445-photo073.jpg

hitch420-127732-albums-problems-picture844446-photo074.jpg

Please help !! + REP!!!! For any help towards sorting this problem out
 
Mine turn the color of your top pic after I flush them a few times late in flower. I WANT this color. That said, I think it's phosphorus deficiency. Increase bloom food dosage maybe? I'd probably flush first.
 
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