Day 21

Well, the yellowing seemed to stop spreading but not I am noticing something else wrong with my plant. I think it might be a iron deficiency? I have attached pics.

First and last pic are the bigger plant: I noticed that the leaves are curling up and a little brown on the tip. Also it is REALLY dark green compared to the other plant. Not sure what they is.

The other pics are the ones I am talking about, there are like little yellowish brown spots on the upper leaves. Iron deficiency? I was reading that it could be caused by high PH, so I am going to get an electronic PH tester as I dont really trust runoff.

Here's the troubleshooting form:

E-Indoor
E-Agway manure and humus + perlite
SCLR- 7
E - Tap (slightly acidic)
E - 6.8-6.4
E - 21 days
E - Pure blend pro grow
E - every 2-3 days (only used nutes once so far)
E- 400W MH, probably 12in
E-80-85 during the day, 75-80 during night
E-Air % Relative humidity - not sure
E- 24 hours
E-large fan on the floor blowing straight up, another fan blowing over the canopy, and smaller fan actually blowing on the plants
TR-Did you pre-soak your media in pH corrected solution? No