HBH Formula 45 1.0oz. Vitamin enriched with Spirulina, Plankton, Krill & earthworm. 36 per case. Instead of cheap fillers and poor nutrient quality, Formula 45 contains only the finest fish food ingredients like fish meal, krill, shrimp, squid, and spirulina algae in a 45% protein formula. Formula 45 was designed to achieve optimum health with a full complement of vitamins, anti-oxidants, and minerals including 71 trace and ultra-trace minerals.