bottom fan leaves droopng

this is my first ever try at growing(its bag seed)the plants are in the fourth week of flowering they havent been given and nutes at all.

the one plants lower fan leaves are drooping and yellowing,i just t6ransplanted it from an 11 inch pot to a bigger one,as i thought
it might be root bound or rootrot but the roots smelled fine.

http://gallery.cannabis.com/data/500...cture_0014.jpg
http://gallery.cannabis.com/data/500...cture_0036.jpg
http://gallery.cannabis.com/data/500...cture_0023.jpg

this is an experimental grow before i try good genetics so im just learning,the plants have no artificial lighting i put them in the sun at 10 oclock and put em in a light5 tight cupboard at 10 oclock at night,all my nieghbours smoke so i have no worries with getting shoped to the fuzz:D

You are doing pretty well.
check your pH though. It may be off. And be sure not to overwater.

Dude your plant is looking fine! Just let them droop off it they want. The plant is going to lose leaves over the course of its grow.

But yea, looking at the colors on it, it does look like you may need to check your pH.

thanx for the quick replies guys:D
yeah to be honest my ph meter is not very good it only tells you the whole ph numbers not the points in between the ph seems to be about 7.5 that i can tell which i know is a little high.

i only noticed yesterday that i have been watering with 7.4 ph water doh,i ph,ed the water down to 6.5 yesterday and watered it with that.
they only get watered when the bottom of the soil is on the dry on my moisture meter(about every 3 days)so it will be 2 days probably before i can water again with ph,ed water