Abstract: A method for removing pollutants from water, according to the preferred embodiment of the present invention, comprises the steps of providing algal spores for seeding, providing a source of water for flowing through a floway, and the water contains a quantity of pollutants and has a pH on entry into said floway, providing a growing surface in the floway upon which the algal spores form an attachment, subjecting the algal spores in the floway to operating conditions resulting in the formation of an algal turf in which the algae has cell walls on its surface, adjusting the floway operating conditions such that a predetermined pollutant precipitates onto and/or into the algal cell walls but not into the water, and harvesting a portion of the algal turf including the cell walls onto and/or into which the pollutants have precipitated.

Abstract: A method of producing mature fish using an algal turf as feedstock. The method consists of first growing an algal turf in a growth reservoir while subjecting the turf to an oscillatory water surge; severing the algal turf from its growing surface and transferring the severed algal turf to a second vessel containing young fish. In an optional embodiment, water enriched in oxygen may be removed from the growth reservoir and recycled to the second vessel. Further, at least a portion of the metabolic and respiratory waste products of the fish may be transferred to a growth reservoir containing algal turf.

Abstract: A high proteinaceous animal feedstock comprises algae having a solids content between from about 6 to about 95 weight percent. The feedstock is typically prepared by harvesting at least a portion of algal turf from its growing surface and removing water from the severed algal turf until the solids content of the severed algal turf is between from about 6 to about 95 weight percent.