The New Life Spectrum Ultra Red Formula is created for the sole purpose of increasing both the vitality of your fish, and the natural colourations that make them such a beautiful and desirable addition to your aquarium. With ingredients such as Antarctic Krill, herring proteins and other natural beta carotenes, enhancing the entire spectrum of colours on your fish will no longer be a dream, but a reality. Boasting no artificial hormones or additives, the New Life Ultra Red Formula is as effective as it is safe for every member of your aquarium. The sinking pellets are 1-1.5 mm in size, which is perfect for your small to medium sized fish with big, bold colors. Suitable for freshwater and marine fish.