Tropic Marin Bio-Actif Sea Salt is a high-quality, lab-grade aquarium salt designed to replicate the natural conditions of the ocean. The Bio-Actif formula enhances the effectiveness of beneficial bacteria and promotes healthy growth in all marine life. It also helps to maintain the necessary mineral and trace element balance in your aquarium that can be depleted by various filtration methods. This product is perfect for creating the ideal environment for vibrant, healthy marine life.