Red tide is the term used in Florida (USA) and elsewhere to describe a type of marine harmful algal bloom (HAB) that grows out of control and produces neurotoxins that adversely affect humans, birds, fish, shellfish, and marine mammals. HABs are becoming more abundant, extensive, and closer to shore, and longer in duration than any time in recorded history. Our objective is to review the effects the multifold components of aerosolized coal fly ash as they relate to the increasing occurrences of HABs. Aerosolized coal fly ash (CFA) pollutants from non-sequestered coal-fired power plant emissions and from undisclosed, although “hidden in plain sight,” tropospheric particulate geoengineering operations are inflicting irreparable damage to the world’s surface water-bodies and causing great harm to human health (including lung cancer, respiratory and neurodegenerative diseases) and environmental health (including major die-offs of insects, birds and trees). Florida’s ever-growing toxic nightmare of red tides and blue-green algae is a microcosm of similar activity globally. Atmospheric deposition of aerosol particulates, most importantly bioavailable iron, has drastically shifted the global plankton community balance in the direction of harmful algae and cyanobacterial blooms in fresh and salt water. Proposed geoengineering schemes of iron fertilization of the ocean would only make a bad situation unimaginably worse. Based on the evidence presented here, the global spread of harmful algae blooms will only be contained by rapidly reducing particulate air pollution both by implementation of universal industrial particulate-trapping and by the immediate halting of jet-sprayed particulate aerosols. Corrective actions depend not only on international cooperation, but on ending the deadly code of silence throughout government, academe, and media on the subject of ongoing tropospheric aerosol geoengineering. Long-standing weather control, climate intervention, and geoengineering operations have come to threaten not only all humans but the entire web of life on Earth.