Lab results verify the perfect balance of purified Astaxanthin (a carotenoid) and pure-cultured spirulina deepens the red tones without negatively impacting the white areas of the goldfish. Our most advance goldfish diet which includes live (viable) beneficial micro-organisms (Hikari-GermTM) which help improve enzymatic activity and allow your pet to more fully digest the nutrient offering. Higher levels of Vitamin E and stabilized Vitamin C are added to further support immune system health.The Hikari-Germ™ by reconditioning the waste in to smaller particles your filter can more readily handle can improve overall water quality, filter effectiveness and helps reduce regularly scheduled maintenance. Feeding : Feed 2 to 4 times daily, the amount your fish will consume within a few minutes. Care should be taken to avoid over-feeding. Always remove any uneaten food after the feeding period to avoid water quality issues. When the water temperature is consistently below 10°C (50°F) or above 30°C (86°F), reduce the amount of fed based on the activity level of your fish and condition of your aquarium.