(CLEAR PICS)Leaf necrosis on lower fans, spreading from middle out - WTF?

[tempes~tos]

Anyone please chime in here.
My girls are 3 weeks into flower.

Soil: Roots Organic
PH of feedings: 6.4
Nutes: FoxFarm Grow Big, Big Bug, Tiger Bloom at 115-180ppm
Tent: 4x2
Light: LED 680w

I have been going crazy trying to figure this out. I thought they were hungry, but now that doesn't seem to be the case after I upped the doses, and its still progressing.

The lower leaves start by going a bit yellow on the center leaf of the fan leaf. Then a spot of necrosis appears, then the whole leaf dies.

FIRST STAGE:

SECOND:

THIRD:

Overall, they still appear somewhat healthy on top.

any idea what this is?

 

[who dat is]

Plants can and will cannibalize lower fan leaves that aren't getting much light from above. Those fan leaves that don't get enough light lower down aren't doing anything for the plant so it just disposes of them as it sees fit. I wouldn't worry about it for now. If it continues to creep up the plant and affect the upper canopy and bud site is when you should worry.

 

[tempes~tos]

OK, maybe I am over thinking things haha.
Thanks for the reply! I will stop freaking out and smoke a j

much obliged sir

 

[tempes~tos]

OK, so things are going pretty well, but I have noticed that this yellowing is now appearing higher up on Queenie. (my only Querkle female)
Is she hungry?
Shes the only plant really showing this

She gets fed pretty often with Foxfarm Tiger Bloom at about ~110 PPM
Only recently did she get switched to Tiger Bloom, before it was Grow big at a similar strength

could she be hungry? It doesnt seem likely to me..

 

[Dog Star]

Give her a bit of Magnesium..

 

[tempes~tos]

Hi Dog Star,
Thanks for your reply.
I should have mentioned that she does get Earth Juice Cal-N-Mag about once every 2 weeks.
Do you think I need to up the dosage?

 

[Dog Star]

Plant look green enough,if you feed her regulary with cal-mag then there is no need to add more.. also if you come close to a end of flowering some leafes go pale or exchange colour and its a normal thing,nothing to worry..

Kind regards

 

[tempes~tos]

OK,
Much appreciated Dog Star!
Have a blessed day

 

[oldbootz]

Plants can and will cannibalize lower fan leaves that aren't getting much light from above. Those fan leaves that don't get enough light lower down aren't doing anything for the plant so it just disposes of them as it sees fit. I wouldn't worry about it for now. If it continues to creep up the plant and affect the upper canopy and bud site is when you should worry.

^^ was going to say the same thing