NorthFin focuses on the health of your herbivore fish. Unlike other herbivore flake formulas, NorthFin Kelp Flake Formula uses premium organic certified kelp as its main ingredient. Perfect measurements of spirulina and astaxanthin are added to ensure your herbivore fish will obtain a full nutritionally balanced diet. Our Kelp Flake formula allows them to thrive in their habitat with a strong and healthy immune system, creating a more active aquarium.