What to do with possible Nitrogen def in week5 flowering?

Hey all. I am in my 5th week of flowering. My leaves are turning yellow and I suspect they are suffering from Nitrogen def. I've been using Dyna grow nuts and following the chart religiously. I am thinking about switching to SuperNaturals.

Since I'm in week 5 of flowering, are there any other tips or what I can do to make my babies green again?

https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html try this link out

foliar feed with magic green from house and garden.

alright. sprayed magic green with lights off.. praying itll be green again. this yellow is starting to worry me. lol. ill see in a few days if any change.

Try reading the part about normal N defs in plants late in flowering.

http://www.icmag.com/ic/showthread.php?t=11688

By week 5 its normal man