Is this a deficiency? 4th week flower help!

[Papaseed]

4th week of flower
4x4 tent
Fabric pots and happy frog soil
Gave low strength bloom nutes week and a half ago
Unknown strain
Htg led 3.0 6 cob light about 18 inches
Supplemental "600" watt led on this plant about 16 inches

 

[Papaseed]

My first grow. Could be overwatering???

 

[Kampbe1l]

overwatering would show damage on all leaves...

is it yellowing from bottom of plant, and heading up - nitrogen deficiency? though that is what a plant does, during flowering....

having said that, do i see some leaves clawing?

 

[Twenty20]

Is the base of the stalk nice and green or is it brownish yellow? I assume it's from seedstock? Fungal Pathogens will cause similar issues.

 

[Papaseed]

Definitely brown. Dunno about yellow but will look when lights come on

 

[Papaseed]

Green and wood stalk