Spirulina Flakes from Ocean Nutrition are a dry flake food formulated for both freshwater and marine tropical fish. The idea is to provide a high-quality herbivorous / omnivorous staple diet.

Key intended uses:

• As a staple / regular diet for fish that require plant material (or that benefit from algae / spirulina in their diet)

• To support coloration, health, vitality, and digestion in fish

• To act as a nutritious base food that can be complemented with other diets (meaty foods, frozen, etc.)

Ingredients of Spirulina Flakes 34g

The list of ingredients includes:

• Fish meal

• Spirulina (blue-green algae)

• Pollock

• Dried kelp

• Wheat flour & wheat starch

• Chlorella

• Lecithin

• Probiotic bacterial cultures (e.g. Bacillus sp., Pediococcus, Enterococcus, Lactobacillus)

• Betaine

• Fish oil

• Yeast

• Algae, brine shrimp, kelp meal

• Vitamins & minerals (A, D3, C, E, K3, B-complex, etc.)

• Antioxidants, trace minerals (iron, manganese, zinc, etc.)

• Other supporting compounds (e.g. choline chloride, inositol)

Nutrients

• Crude Protein (min.): 45.6 %

• Crude Fat (min.): 10.8 %

• Crude Fiber (max.): 3.1 %

• Moisture (max.): 8.1 %

• Ash (max.): 7.0 %

• Phosphorus (min.): 0.7 %

• Microorganisms (probiotics): 24,000,000 cfu/g at time of manufacture (i.e. beneficial bacteria count)

Characteristics

• Probiotic Enrichment: The flakes come “now with probiotics” — beneficial bacteria are added to help support gut health, improve digestion, and bolster immune systems in fish.

• Does Not Cloud the Water: They are designed / formulated so they don’t cause excessive turbidity in the aquarium when used appropriately.

• Soft / Flaky Texture: The flake form is more readily ingested by many fish species (compared to hard pellets) and helps ensure better digestibility.

• Color-Enhancing Pigments: Because spirulina and other algae contain natural pigments (e.g. carotenoids, beta-carotene, astaxanthin), these flakes help support and enhance fish coloration.

• Dual Use (Freshwater & Marine): It is suitable for use in both freshwater and marine tropical fish systems.

Feeding Guidelines

• Feeding Rate & Frequency: Feed one to three times daily, but in amounts that can be consumed in ~5 minutes (or similar short window). Do not overfeed.

• Appropriate Species: Suitable for most freshwater and marine herbivorous / omnivorous fish species — tangs, angelfish, blennies, plecos, etc.

• Complementary Feeding: Best when used in combination with other flake foods (or meaty foods) to provide a balanced diet. Some retailers recommend combining with a “Formula Two Flakes” or other complimentary flake food.

• Storage: Keep in a cool, dry place, away from direct sunlight, and ensure the container is tightly sealed to preserve freshness and prevent moisture ingress.

Advantages

• Supports Coloration: The presence of spirulina and other pigments helps fish maintain and intensify their natural colors.

• Digestibility & Health: The probiotic content and soft texture aid digestion, gut balance, and general vitality.

• Balanced Nutrition: Good protein, fats, and micronutrients make it a viable staple rather than just a supplement.

• Versatility: Being suitable for both freshwater and marine systems is convenient for hobbyists with mixed systems or hybrid setups.

• Low Water Impact: Because it’s designed not to cloud water (when dosed properly), risk of fouling water is reduced compared to other foods.

 Considerations

• Overfeeding Risk: As with any feed, excessive amounts or frequent overfeeding can lead to leftover food, nutrient spikes (ammonia, nitrates), and water quality issues.

• Not a Complete Diet Alone: While good, it should not be the only food — many fish also need protein, meaty items, or specific supplements that spirulina flakes may not fully provide.

• Shelf Life / Freshness: Once opened, exposure to air, humidity, heat can degrade the quality (oxidation, microbial changes). Proper storage is essential.

• Species Suitability: Some strict carnivores may not accept it, or may not derive enough from it. It works best for those that include algae/plant matter in their diet.

• Variable Nutrient Demand: In high-demand systems (e.g. fast-growing fish, breeding, juvenile stages), supplementary high-protein or live foods may still be needed.