Will my yellow leaves turn a healthy green again?

I had a slight problem with nutrients in the veg stages, it's now sorted but I was just wondering if the colour of my leaves will go dark green and look healthy again, or will they stay yellowish?
Cheers

new leaves will be OK but the old leaves will stay the same

is it all the plant or just the lower leaves
i experienced over nuting and it burnt my lower leaves and they neva recovered but they sat there all grow but the new growth was fine,
it will get over it but obviously it will bear the scars

sorry to necro bump here people but this is a useful ass thread.

i didnt know that once leaves turned yellow they stay that way, i always try to add nitro and when the lower leaves stay yellow i was confused as hell but this makes perfect sense, just check the new growth for results.

thx!!!1112123123123123

so if'n the leaves stay yellow then they're not really contributing and should be nipped off ?

from everything that i have read and seen as long as it is the lower leaves and you have corrected the nute problem you should be fine... you never want to cut these leaves bc they pretty much act as a filter for the plant... from the way i understand it when your plant receives to much nutes or is sick the lower fan leaves take in the extra or the bad and die off keeping the whole plant from dying... i would leave the yellow leaves alone until they die out... but def dont count on them turning green again...

never remove fan leaves they act as solar panals and absorb co2