ok so my plant is about 6 weeks into flower including the 2 week strech but noticed the fan leaves are yellowing up is this normal im using duch fest hydrobloom part a and b.
Its normal in flowering to lose some but you don't want to lose to many to fast. How many weeks you have left?
im guessing about 4 to 6 weeks should i add a little nitrogen to the ferts ? the bloom nuts contain a small amount of nitrogen bit not enough to stop the yellowing of the leaves.
You can give them a bump in the nitrogen in flowering just don't over do it. To much nitrogen in flowering can slow down the flowering process.
Overall that plant looks very nice. Good job so far. As others suggested, a little bit of yellowing in the latter half of flowering is normal. Your plant is yellowing a bit more than I would like to see in my plants, but nothing of great concern. If it were my plant, I'd give them a little dose of nitrogen from you veg nutes to minimize what you are experiencing. I typically do this once or twice during flowering anyways. Even though you want high P and low N for flowering, the reality is that the plant grows like crazy during flowering and it does require more N than I think some people assume. Just my opinion though.