Just saw your post on the junior line. The feed should be all floating. We make fresh feed regularly and the first few bags and last few bags tend to sink just as part of the normal extrusion process. We try to discard a few everytime, but one must have snuck through. Denser pellets carry higher nutrient density per pellet than a less dense pellet (think a cup of cheetos vs a cup of cliff bars) so it absolutely wont hurt the fish
I'll ger a replacement bag put to you this week. I apologize for any inconvenience. -Dustin 605-691-5551