if you are going to make your own beefheart, what you do is - when you are grinding up the pieces, you add the crushed garlic into the blender. that way when frozen, it is all intermingled with the beefheart and there is some garlic incorporated into the beefheart itself. i went to my local grocery store and had them order some beefheart for me. it ended up being pretty cheap. if you are thinking about adding garlic to prepared beefheart there is no real way to do that... :-/ but your discus should be fine without it. its not a necessity. if you really wish to add it to pre made beefheart, then let it thaw and mix in the garlic. not too much though!

garlic is pretty strong stuff.