Kent Marine Garlic Xtreme provides a natural and nutritional attractant which effectively aids finicky eaters in taking food items. Garlic Xtreme does not contain any artificial ingredients or steroids. Garlic is safe for use with all species of freshwater and marine fish, plants, corals, and other invertebrates. Use in combination with Kent Marine Zoecon and Marine Zoe (both sold separately) to provide your aquarium inhabitants with a complete range of vitamins and omega-3 fatty acids. Garlic Xtreme does not require refrigeration or freezing after opening, however refrigeration will prolong its useful life.