Marine phytoplankton growing medium (1000x concentrated). Guillard′s F/2 medium is a widely used growing medium for growing marine algae. It's a well balanced source of major nutrients, trace metals, and vitamins.

Ingredients: Nitrogen, Phosphate, Trace metals (Iron, Copper, Molybdenum, Zinc, Cobalt, Manganese), Vitamins (B1, B7, B12).

Note: This item does not contain silicates. If required, a sodium metasilicate solution can be purchases separately.

Dosage: Add 1 ml of Guillard's F/2 fertilizer to 1 L of culture (clean saltwater + phytoplankton).