You're most welcome. Thank you for your question. I have long wanted to share this collection method but you are the first person that I am aware of to express an interest establishing mayflies. I have a lot of great memories of hexgenia hatches in a municipal lake where I once kept a lot and dock. They are very good bait for crappie and we would use light to draw both hexes and crappie to the dock. Was a blast and a good way to stock the freezer with filets. These experiences led to an interest into the culture and collection of them.

Here is the reference from where I learned of this collection method..