I need advise for a plant!!! Pls !!

29 DAYS OLD IN VEG, SKUNK#1
WHY ITS LIGHT GREEN THE PLANT AND ON SOME LEAVES HAS THOSE MARKS?? ALSO THE LOWER FAN LEAVES ARE VERY LIGHT GREEN/YELLOW AS U CAN SEE!!
LIGHT: 400w HPS AND I WATER WITH 6.5 PH ALSO BIOBIZZ ALL MIX SOIL AND MINIMUN DOSE OF ROOTJUICE AND BIO GROW AND BIO HEAVEN!
MAYBE ITS DUE TO THE POT? I HAVE IT IN 3GALLON POT, SHOULD I TRANSFER IT TO A LARGER POT MAYBE?????

PLS HELP ME!!!

What are your temps? maybe don't give it as much fert?

The temp is 25 celsious, and I ve gave only 2 times ferts the minimum dose! Maybe should I transplant to larger pot? I use 3 gallon pot now.