White Widow

The yellowing leaves is most likely nitrogen deficiency and I see some yellowing between the veins on some which is the beginning of magnesium deficiency. I would guess that the rust spots on the leaves you removed was calcium deficiency. A high quality soil will feed the plant for about 3 or 4 weeks, but they will need some food after that. I would add a good quality stand alone nutrient at minimum to get them back on track. I am not much of a soil grower but feeding with every other watering is usually a good place to start with feeding times. I use general hydroponics maxi series nutrients just because of their simplicity and cost. Good luck!

Brother your plants look great. Your at week 11 so to lose a few older fan leaves is natural. you can just remove the discolored ones they did their job. They are usually drained of nitrogen by this time. The brown part looks like a lack of calcium in the leaves. The rest of the plant looks fine. If possible you should start adding some extra cal/mag to your feedings when budding begins they will start drawing it from the leaves as they grow and bulk up. Hope this puts your mind to rest. Good luck