400ml Concentrated Growing Nutrient (Add 2ml per 1ltr of water). NEW IMPROVED FORMULA! Dosage is simple, add 2ml of the nutrient to every 1Ltr of your water (using your usual saltwater\seawater formula) and add to your Phytoplankton culture.
The "NEW IMPROVED - 400ml Phytoplankton Growing Nutrient - Makes 200L - GUILLARDS F/2" is ideal for professional or experienced aquarists who maintain large aquariums.
