Enhance growth, enhance color and increase immunity formular spirulina 6 percent: Suitable for all carp fish to enhance the coloration of fish spirulina 12 percent: Suitable for all carp fish to rapid enhance the coloration of fish is a special formulation for carp, gold fish and cichlid. It is nutritionally complete and balanced. Probiotic supplements that help in the digestion of food and absorption of nutrients. Beta - glucans supplements that increase disease resistance and improves growth and performance in fish. Non - water fouling flavor (s) and size (s) spirulina 12 percent: Small pellet: 907. 2 G. (2 Lbs), 453. 6 G. (1 Lbs), medium pellet: 907. 2 G. (2 Lbs) spirulina 6 percent: Mini pellet: 100 g, small pellet: 907. 2 G. (2Lbs), 453. 6 G. (1Lbs), medium pellet: 907. 2 G. (2 Lbs).