pecked hen,
as i said when i pmd you, i use just a little while they are breeding, to fire them up a bit, you can either mix in in with their normal breeding mix, or as i do, i feed in the afternoon normal feed, but in the morning i throw a little in on its own, it worked for me as advised by silverwings i think, on topic, stubbern breeding.
hope this helps,
i think the fishing hemp is bigger than the small bird seed hemp, but not 100%, im sure someone will put you right,
regards