WALNE'S MEDIUM - ALGAE FERTILIZERMarine phytoplankton growing medium (1000x concentrated). Walnes medium is a widely used growing medium for growing marine algae and particularly good for flagellate algae. Specifically suited to Isochrysis, Pavlova and Tetraselmis species. Walne's growing medium for algae cultures provides a well balanced source of major nutrients, trace metals, and vitamins. Ingredients: Nitrogen, Phosphorus, Trace metals, Vitamins (B1, B12). Note: This item does