The water samples were collected for the isolation of strains of alga Spirulina platensis from three different locations and the strain Spirulina platensis was isolated and it was, designated as ANS - 1 strain. The characteristics of Spirulina platensis ANS -1 were compared with reference CAS -10. The isolated strain ANS -1 and reference strain CAS 10 were grown in substrates 1/6 diluted Zarrouk's medium (control), Rice mill effluent and sago industrial effluent.The effect of temperature and pH was determined for the strains CAS - 10 and ANS -1, and highest biomass was observed at 30 C of pH...