color change

hi all i searched the forum but didnt find much and this is my problem, my plants are about 3-4 weeeks old and iv noticed the biggest 1 had lighter green marks on it lol its hard to explain but its like its changing to a lighter green. I wanna no is it to much watering do u think ????

Are you flowering? Also what nutes you using? Light green on new growth or just all over? What light you running?

no im stilll in veg and for nues im using BIO BIZZ BIO GROW + BIO BLOOM + iv only just used the tinyiest amount at the moment on the oldest plant which is 3 weeks old and i used the correct 1 for the beg stage.My light i have a 300w cfl and its all over the leaves

Pictures please to be accurate diagnosis but i would guess nitrogen defficiency but without pics is hard to tell

does it look like this

http://www.420magazine.com/gallery/data/500/13023.jpg

Sounds as if the bigger one is sucking down the nutes.. might be a slight nitrogen deficiency...

But, better too little, than too much.

kmoo - looks a little like that but not as bad the plant looks fine just when you get closer u can see a few lighter splashes hear n ther thanks for all ur help and my camera is fucked at the mo

iv been told my plant needs a little epson salt