hydro, sorry I don't have an answer on your yellowing problem. You may want to provide more detailed information on your soil and growing conditions?

As for the pollen question, it seems I have read on here where people will store the pollen in a simple ziploc bag. You will probably be able to discover more details through a search of the threads on this board using the "Search" function at the top.

I know I am not much help, especially with the more advanced questions. I have learned a great deal on here, as I know you have. I wish you much luck on your grow, and look forward to following along with you.

Be good out there!