A manifold assembly is formed of a pipe. The pipe has an open interior. A fluid handling assembly has a plurality of downwardly facing spaced apertures in the manifold. A flexible tube extends downwardly from each aperture. The fluid handling assembly also has a supply of fluid. The fluid is adapted to kill and manage dinoflagelents. A line couples the supply with the tubes for the dispensing of the fluid. At least one water craft with a line couples the central water craft to the manifold. A sensor is provided to determine ambient conditions. The sensor is adapted to analyze the sensed ambient conditions and dispense the fluid at an appropriate rate.