whats wrong with my baby?

hey guys so its about 6 weeks into veg from seed and from the bottom up this is starting to happen to the leaves :\ what do you think it is? i only give it minor nutes (one feeding every 2 weeks) NPK of 9/2/6. any help is much appreciated

Start feeding weekly.

can anyone add to that? will feeding weekly stop yellow/burning leaves?

add some epsom salts for mag..........

i've only grown marijuana for a couple years and have took care of our houseplants which my house is full of them for the last 20 years and stuff like that just happens, as long as its not a bunch of leaves i would just cut that one off.