Water Purification through the Ecological Food Chain Effect The BRI (Bio Reactor Island) Method uses bio-manipulation technologies to inhibit phytoplankton growth and thereby improve water quality. This method involves populating a floating island with plants and phytoplankton consuming microbes.

This island is designed to optimize the accumulation of microbes on its underside surface. A water circulation system circulates and aerates the water accelerating the rate in which phytoplankton brought into contact with the microbes under the floating island.