Only Selcon Concentrate contains Omega-3 HUFA, Vitamin B12 and pure stabilized Vitamin C. So if you are establishing a saltwater breeding program, preventing/reversing lateral line disease or just maintaining a healthy reef system, try Selcon; it's truly amazing. Excellent for soaking freeze-dried foods. A must for filter-feeding invertebrates. Boosts the nutritional value of live brine shrimp.