The American Marine Selcon Concentrate is an aquarium food booster that contains highly unsaturated Omega-3 fatty acids, marine lipids (200 mg/g), stabilized Vitamin C (200 mg), and Vitamin B12 Cyanocobalamin (240 mcg). It can be used to enhance the nutritional value of freeze-dried, frozen, or dried food, as well as added directly in the tank to benefit filter-feeding invertebrates. It does not affect water chemistry and is free of yeast, phosphates, and nitrates. Additionally, it can help treat Head and Lateral Line Erosion/Disease in fish.