Auto ak yellowing at the tops?

[MrHashishin]

Sooo... this last week my ak have been yellowing at the tops
and it's only getting worse, the only thing i've fed the plant is basic garden fertilizer (dont know the npk values) and wood ash.
It's under 70 watts of cfl, and is in the same pot with a tiny male plant
i was hoping to pollinate with.

http://www.icmag.com/ic/gallery/showphoto.php?photo=782641&ppuser=28133

http://www.icmag.com/ic/gallery/showphoto.php?photo=782640&ppuser=28133

http://www.icmag.com/ic/gallery/showphoto.php?photo=782639&ppuser=28133

getting kinda of worried now since this has happened before on a previous grow
and the tops died when i didn't do anything about it.
So please if anyone could give some input to what's causing this i would be ever so grateful.

 

[MrHashishin]

Anyone? please?
cut of the yellow part, since it was starting to wilt... i'm afraid it might happen to
the lower budsites as well, its been flowering for about 4 and a half weeks now,so if anyone
know what kind of defficiency can cause this DO SHARE! don't wanna loose mah bud.

 

[cork144]

after looking through the sticky for sickplants, it looks almost like an iron def, read through the topic itself, it will give you advice on what to do with what deficiency's.

 

[MrHashishin]

Ah thanks, looked through it already though, pics of it did'n look "that" similar to mine... but you might be right, worth a try.

 

[Smooth B]

Wood ash is going to dramatically raise your ph.

 

[PuReKnOwLeDgE]

To me it looks like you have an extreme difference for day and night temps? What are they?