Bought some catfish feed and I've been tossing it out in the pond on and off for a week or so. It seems like the bluegill and carp are loving it but I haven't really seen any catfish eat it. Any reasons for that? If anyone's wondering they were stocked last August and are about 5 inches to a foot in length 

Are you doing it at the same time and same place every day? Catfish don't regularly feed on the surface unless there's a known food source available. You have to get them into a routine of coming to the top to feed. My grandpa used to do it at his pond, same time and place every day. Every catfish in the pond would be there and they'd be on the top in a frenzy once he started getting close to the pond (they felt the vibrations of him walking). I've seen people who tried to do it in other ponds but weren't on a schedule and it never worked very well. 

You need to check out this section: http://www.bassresource.com/lake-management/

It has articles for everything related to ponds and pond management, including fish feeding.  

I like the sinking feed better.When I used the floating feed, catfish never would come up to get it.