So I should get a cup with water and salt and throw pellets in there to soak with water ? Can I throw blood worms in there ? The last time he ate it was some bloodworms he didn't touch the pelletsGet some Epsom salts as well. Metro is best used as a food soak as I mentioned, Epsom salts can be incorporated into the soak as well to help the fish flush their systems while the meds take effect.