Something Wrong! HELP!

I'm not sure what's wrong with my plant....but it seems to be happening quickly and to all of my plants. Instead of the healthy dark green leaves that cover the bottom of my plant, the new forming leaves are yellow, droopy, and rigid. I recently started using a very small dosage of Fox Farms Veg Grow, but not much at all....only one watering so far. I also increased the light schedule by two hours recently because one of them started to flower too early. Please Help!

Here is my Setup:

400w HPS
2.5 x 4 Grow Space

Temps: 70 - 83 F

Humidity: 40-55%

Soil: Miracle Grow - Combo of Moisture Control and Organic Soil

Nutes: Fox Farms Veg Grow

Strain: White Widow/Green Crack/707 Headband

Age: 5-6 weeks into Veg

Watering Schedule: Once a Day - 1/8 Gallon per Plant

Light Schedule: 14/10

Light Distance to Plants: 6-10 Inches

lmao from those pics that plant looks fine. 6 inches with a 400 watter thats not cool tube is too close man. oo and be carefull feeding nutes to plants useing m/g soil

How far is your light???too close without a cooltube, and why did you have it on 12/12 if you didn't want it to flower,and why 14/10??? it will probably stay flowering

Cuz I'm a newbie...this is my first grow....should I keep the 12/12 schedule??

The pics I posted make the plant color look much better than it actually is....it's much more yellow...

Yeah the light being so close will cause that,either get a cool tube,air cooled hood or move your light higher.

I have a sun system yieldmaster reflector w/ a glass screen that keeps some of the heat away from the plants....

I need to install a proper exhaust system that hooks up to my 6" flange on the reflector

Buy an Inline fan like this attached to ducting and you'll be good. Vegetative stage requires a light cycle of either 24/7, 20/4, 18/6. For flowering 12/12.You should go through this site and read like crazy and almost everything you need to know has already been answered.It will save you a big headache.