Nannochloropsis is a beneficial micro algae found throughout the worlds oceans. This live phytoplankton has been cultured from an Agar sample, using the industry-standard Guillard f/2 medium formula to promote exponential growth, high nutrient retention, and longer viability. The genus Nannochloropsis is widely accepted as the standard for reef keeping aquarists, to promote the growth and vibrancy of corals, invertebrates, and other filter feeder livestock. This live phytoplankton may be used as an inoculant to propagate additional quantities, if desired. At Mercer of Montana, we adhere to the highest standards of sterile laboratory protocols, to ensure that each bottle of dense, vitamin rich Phytoplankton is contaminant-free. To obtain best results when feeding systemically, Mercer of Montana suggests the daily addition of 2-3ml to every 40 gallons of saltwater in your system, pouring directly into the display tank, or associated sump (the cap on this bottle will hold approximately .5 oz). Protein skimmer should be turned off during this time, to allow more of your phytoplankton to be absorbed by your livestock. Additionally, or in place of systemic feeding, this Phytoplankton may also be fed to your livestock directly, in order to target specific recipients. You may notice a small green cloud form when pouring into your water. This is normal and will disperse immediately throughout your system. To extend the viability of the contents past the 7-day growth cycle, remember to refrigerate contents immediately upon receipt and invert bottle(s) once daily. In this manner, contents should retain potency for up to 28 days. We always filter when bottling this Phytoplankton, so you know youre adding the highest level of purity to your livestock and display water.