SMB take to feed very readily, so you may be getting some good SMB growth from the feed.
If you have time, soaking the feed in water for 5 minutes or so makes it much more palatable to fish. Of course, to do this, you have to feed by hand.
Excerpt from Robert Crais' "The Monkey's Raincoat:" "She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."
