Yellowing gg4

It is hard to tell much by seeing loose leaves sitting on a table. Seeing the whole plant in natural or white light would help. The overall appearance, the overall depth of green, where brown or light green leaves are located on the plant are all helpful clues. The more I grow the more I learn that different plants have different needs. Some plants can go through flower OK with what I think is a "normal" flower nutrient blend and be a nice green all through the grow. Others will turn lighter green or yellow, an indication that it wants more nitrogen, sometimes a lot of nitrogen into flower. If the plant is calling for nitrogen don't be afraid to give it some, no matter what stage of growth. If the tips of the leaves turn brown then you have gone too far.

fogot 2nd part of that last paragraph.. So, if you dropped N, i'd bump it back up for a bit unless one of the first 2 qualifications are met... in the case of a late flower plant i'd just let it fade and not worry too much if it will easily finish in time without losing significant capacity for photosynthesis.

not enough info... if late, less of a problem, if at all. if only lower leaves, less of a problem, if at all. unlike what most ppl think, the plant still needs 90% of the N you fed in vegetative phase. N is needed in all new gowth... to think it needs significantly less is just not undertsanding the moleculr components of plant cells/organelles/dna etc... if someone studied that, then they could create guesstimate of how much less or more the plant needs this molecule or that... growing in your basement or even 1000s of plants won't resolve anything if just using you eye.

This is normal your plant is in its autumn stage and pulling required nutes from the fan leaves