Yellowing during flowering. Please help diagnose (PICS)

I've read the stickies on deficiencies and moisture stress, but I can't differentiate between deficiencies. Too many factors cause yellowing. Which is causing this? I've been feeding this plant Foxfarm Big Bloom and some ironite food with 7% nitrogen. The ironite was only fed once this past week and two feedings of the Big Bloom through the past weeks. What is causing this? The leaves also seem to permanently droop in certain areas.

no worries man its just a slight nitrogen def. as you go along flowering most of your leaves are going to yellow out the closer you get to finish..i wouldnt worry about uping the nitrogen(but you dont want to cut it completly)just keep giving it bloom nutes with the higher phosphurus and potasium...

nickfury510 said:

no worries man its just a slight nitrogen def. as you go along flowering most of your leaves are going to yellow out the closer you get to finish..i wouldnt worry about uping the nitrogen(but you dont want to cut it completly)just keep giving it bloom nutes with the higher phosphurus and potasium...

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This is my 3rd week flowering. Should it be that yellow already? What do you think about curling? I've read it can be overwatering or heat stress. But my temps are usually in the 70's and my 150watt hps is usually about 6 inches from the trees. P.S. Thanks for the quick response!

yes ..the yellowing starts early at the base of the plant and works up...as far as the curl im not sure...i get the claw from time to time but can never figure out what the fuck it is..it doesnt seem to stunt growing but i still dont like the looks of it...

Perfectly normal plants have used all the goodness out of the leave now its time to pull them only pull them off when they are 100%yellow.

tyke1973 said:

Perfectly normal plants have used all the goodness out of the leave now its time to pull them only pull them off when they are 100%yellow.

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Thanks tyke!