Need Help

I don't even know where to start...Well i'm growing some ww and shiva skunk,they are 3 weeks into veg today,the plants look strong and healthy...I'm using ebb and flow,my room temp is 70-80f humity 50-55%,water temp 68-75f,i have 2 600 watt MH lamps,the lights are 2 1/2 feet away,ph 5.5,i'm using flora nova 1 part grow and floralicious plus at 700 ppms......Leaves were dark green,now some are fading light green..Could it be a nutrient def,could it be cold air,mixing with the warm air,in the grow room...please help! and i'm sorry,for the long post..I have some pics too....thanx alot people.

that doesnt look like anything to worry about..all my new growth is light green too, especially when I throw them into flower

your plants all look healthy

Good lookin man.

That last pic does look like a def I had and cal-mag fixed it right up. Otherwise, they look good

Thanx Boneman..But tell me is cal-mag,the same as clearex...Sorry but i don't know s**t about growing.

That last pic does look like a small magnesium deficit. Good way to treat it is with molasses (1tbs/1gallon water). Except for that, your plants are looking fine, so don't worry.