Noob needs help, please....Watering issue (T5 lights)

Yes, Im completely new at this and have many questions, but first....how much do I water my babies?
I have 10 lowryder#2xAK47 )Feminized) of which I just planted the germinated seeds. I have a 4 -54w T5 setup (holds 8 bulbs-I dont need all 8 bulbs now, do I?)

My first question is, how much/often should I be watering these? I'm afraid of overwatering since they are just seedlings, but it seems like they dry up in less than a day or so. Should I be watering by spraying them or pouring water into the starter pots?

BTW, i am using FoxFarm Ocean Forest for my medium--no nutes yet. I have the lights about 6 inches away or so (I hear they should be closer, even at the seedling stage?)

Couldnt upload pic (having problems with file being to big)

Thanks!!

Pot size? Relative humidity? Temperature?

Misting and direct watering is good for seedlings. The frequency mostly depends on the three above factors.