Abstract
Growth characteristics of Phormidium luridum isolated from fish culture pond were investigated in various nutrient concentrations.Cultivations were carried out at 25°C in continuous light illumination with cool-white fluorecent lamps at 1, 3001x.
Maximl growth was obtained at an initial pH value of 8.3 in Gorham's medium. Nitrite and nitrate were significantly effective for the growth of P.luridum as nitrogen souces.A good growth was observed at the concentrations of 1.8mg/l for phosphorus, 1.6mg/l for potasium, 5mg/l for magnesium, 1.7mg/l for iron and 14mg/l for calcium.P.luridum showed a low tolerance for sodium chloride at 400mg/l.
