Water samples of 5 L were
collected from each of the 3 nutrient-enriched
ponds for the experiment. M.
macrocopa and B. thailandensis at the
densities of 100 and 1,000 individuals were
placed separately in 250 mL flasks filled
with water collected from each pond.
Efficiency of 2 zooplankton species to
reduce phytoplankton was obtained by
decrease of chlorophyll a that was measured
every 24 hours for 5 days.