Compared study of long term storage Immobilization impact of entrapped and free microalgae cells SEM observation of cells morphological change and cells viability, metabolic activities, biomass increase measurements and distinguish respective specie biomass contents carbohydrates, proteins, and high lipids content optima for aquaculture for Scenedesmus quadricauda in fish culture, Isochrysis galbana in clam culture, twelve species of benthic diatoms in post-larval abalone culture.