I am going to have a custom feed mix done using a formula that the store already offers combining soybean meal and corn chops. I want to add some ground kelp and also am considering having the BOSS I am tossing out daily added into the mix. I also periodically give calf manna, but they don't like the pellets much. If I can figure out a way to grind them up I may have that put in, too. Does anyone else have kelp in their feed and if so, have you noticed any benefits? It will be added at 1 - 2% of the total ration. I would appreciate any input, pro or con, to this. And any ideas about how to grind up a sack of calf manna would be helpful, too. Thanks.