Deficiency question

I have red stems and yellowing leaves is this a N defeciency??? there are no red stems where the buds are developing just on the leaves and stems that feed them if that makes sense. sorry for the big blurry one but it shows where the stems are red.

I am about 20 days into flowering does this seem about the right progress?

purple stems is ok, a lot of plants have purple/red stems on big fan leaves. Looks like you got nitrogen deficiency from your flowering which is normal. In day 20 is early so i would say to feed it nutes until day 40. Start at 1/4 recommended strength

up up up some of the yellowing leaves also are developing tiny brown spots.

have you added any nutrient solution yet? you can try fish emulsion, is high nitrogen ratio. make sure you start feeding at 1/4 recommended strength so you dont over do it and burn em.

I did today yesterday one of them went almost completely yellow.... will it return to its green color once it has sucked up the N? Or will it be light green forever now?

should stop yellowing and get a little darker green. i dont think it will ever fully recover on the worst leaves. anyway point is that the new growth keeps rolling in as long as u got that ur fine.