Yellowing of bottom fan leaves

My plants are 4 weeks old, I'm soil growing in doors and I'm using 125 watt cfl, going to switch to 600 watt. But the problem I'm having is the bottom fan leaves are after turning yellow and wilting, and the next fan leaves up look like there turning yellow now too. Can anyone help me with ths problem......

Yo bro,can you post a pic,can't really diagnose with no pic but sounds like it's probably being overwatered. What size pots you in at the mo?What growing medium are you using?Are you feeding them nutrients yet?Almost def sounds like too much water but we need more info.Try leaving the soil to dry out well before watering them again.Lift the pot to check the weight,if it's heavy don't water,if it's light then give it some water but not too much.Get back to us with more info please

Probably a nute/nitrogen deficiency. Step up ur nutes a bit and feed her more often. Your plant sounds like it doesnt have enough food so its sucking the stored energy in your fan leaves. It starts on the bottom leaves and progresses upward toll u take care of it.

Could be either or.
You need to give more details, and pics would be very helpful too.
I assume from the age, you are vegging?
How big of a container?
What kind of soil?
How often do you water?
If you don't give us anything to base an answer on, all we can do is guess, and throw out ideas of what it MIGHT​ be.

Thnks guys, i have them on 1 liter pots now there a foot and a half in size. I feed water 1 day nutes the next day and a day break and i have been keeping this cycle going. Im using organic grow nutes and bio biz soil. Will up load pics later thanks.