The ground Hemp produces a very light oil which is released immediately, even in cold temperatures giving instant attraction and the heavier fish oils in Halibut pellets are released at a slower rate and keeps pumping out of the pellets as the water flows over them so drawing fish to the feeder for a prolonged period of time. The variation in the size of particles means that fish pick up the trail as the smaller bits get moved downstream creating a trail to the bigger bits which stay around the feeder.
