read this method on here somewhere but my bass came eating frozen BW so I thaw it all out and mash massivore in and refreeze it and cut up the frozen cubes in chunks and dropped one in at a time, that worked immediately, Then I took away their afternoon meal and offered only tiny pieces of massivore. Im talking 1 pellet cut in 6 pieces or so lol. My ocells are 3 inches & under and now happily wait at the bottom of the tank for the massivore chunks to fall right in front of them 4 3 inch ocells massivore trained it took about a month but now they eat BW and massivore twice a day and take both of them! they dont like krill though I never can figure that out. Also my geos go crazy for the pellets also lol there dinks as well. they just ate them right out of the bag!