Kent Marine PhytoMax 1 oz is a super-concentrated phytoplankton suspension for filter feeding invertebrates.A highly-concentrated suspension of Nannochloropsis, Tahitian Isochrysis, and Tetralselmis, contains over 12 billion cells per ml (approx. 1.2 billion cells per drop)Rich in EPA, DHA, and amino acids for maximum benefit to marine invertebratesSize range of phytoplankton is optimal for feeding a wide range of filter-feedersProperly preserved, contains no alcohol; Requires no refrigeration or freezing