What kind of deficancy is this?

Hey all, just wondering what kind of problem am i having with my plant. I am guessing it is a deficancy of some sort, anyway check out the photo and get back to me.

(it's the very bottom 2 leaves so far with the yellowish stuff on the outline of the leaves) please help!

Thanks, much appreciated.

thats really hard to see man. but when older leaves start to yellow its probably nitrogen deficiency, have you fertilized it yet?

I give it nutrients, DNF Part A&B Formula, hydroponic store guy said i dont need to fert, this is all it needs. Anyone able to clarify is this true? or should i get some fert

looks like u tried to feed it too much

So what can i do to help it heal it self? is it possible for it to heal? and become green again?

water without nutrients for a Lil while then don't add so much next time