Seachem Focus is a medicated food mix designed to treat internal infections in fish when used alongside water-based medications. It helps target parasitic, fungal, bacterial, and viral infections, making it an essential tool for aquarium owners dealing with sick fish. The product can be easily incorporated into the diet of affected fish by mixing one scoop of Focus with a tablespoon of food and a few drops of water to create a paste that is safe and palatable for your fish. This method ensures that the medication reaches the fish without causing harm to sensitive corals, plants, or invertebrates within the aquarium.