New Life Spectrum Optimum All-Purpose Flakes – 600 g – A large canister of premium fish flakes from the NLS Naturox series, suitable for both freshwater and saltwater aquarium fish. These all-purpose floating flakes are made with high-quality, easily digestible marine proteins like Antarctic krill and herring, and enriched with natural color-enhancers (spirulina, kelp, and astaxanthin) to bring out your fishes’ vibrant hues. They are formulated with no artificial preservatives (Naturox uses natural preservatives) and contain garlic for palatability and immune support. The flakes crumble easily for fish of all sizes and won’t cloud water when used as directed. With Spectrum’s balanced nutrition, including added vitamins and minerals, these Optimum Flakes keep your fish healthy, active, and brilliantly colored while reducing waste output for a cleaner tank.