What size would the forum choose for feeding newly stocked 3-5" BG/HBG/RES?
~0.4A pond would also have 12lb of FHM in it.
5" BG will spawn pretty quickly and you might consider getting some starter #4 for the new recruits. I hand feed around my pond during spawning season and 2" BG will line up in shallow water along the bank waiting for it. I throw it just a foot or so out from the edge of the pond anywhere along the bank I see small BG. One bag will last me all season on a 3 acre pond, so a small pond 10# might be enough.