If you soak the floating Cichlid Bio-Gold+ pellets for a few minutes and then slightly squeeze each one before putting in aquarium they will sink quickly. A bit of a hassle, but one way to get them on the pellet. Once they have eaten it a few times they may come to the surface to get the pellets.
So.. Has anyone actually tried this soaking and squeezing them pellets? I have to agree SINKING Bio Gold+ would be awesome though!