The cultivation of algae Anabaenopsis sp. on Drew medium is efficient for maintaining in laboratory condition, can obtain a maximal biomass of 1,04±0,05 g/l in 11-12 days. Growth phases for algae Anabaenopsis sp cultured on Drew medium is: one day for lag phase, one day – log phase, 7 days – exponential phase and one day stationary. The higher specific growth speed is in log phase, and for exponential is 0.010±0,004 days-1.