Garlic guard is a Concentrated garlic supplement it Enhances appetite and Also contains Vitamin C, a strong anti-oxidant. GarlicGuard™ is an all natural garlic scented odour and flavour enhancer for freshwater and saltwater fish. Our research has shown that many fish are attracted to natural odours, such as garlic. Simply mix GarlicGuard™ with any food item, such as Seachem’s NutriDiet® Flakes, to attract the interest of finicky eaters, e.g. discus and marine angelfish. GarlicGuard is safe for reef and planted aquariums.