Aquaculture aeration systems comprising air pumps for aquaculture, compressed air pumps, air compressor pumps, air blowers for aquaculture, centrifugal air blowers, rotary air blowers, axial flow air blowers, air compressors, air diffusers for aquaculture, and surface aerators for aquaculture; oxygen generators for processing water by increasing oxygen content in the water, namely, oxygen generators for aquaculture