Described are preferred methods and compositions for controlling algae which involve the use of bleaching pyridinecarboxamide compounds. In a preferred embodiment, the hypervisor includes a plurality of function sets. The packaging system enables a content creator to create and associate sphere of fair use and content modulation rules definitions with content. The projectionrecess arrangement over the flow contact surface as well as the thickness and relative projection-to-base dimensions are arranged to provide a high paint holding capacity without too fast a load up of, for example, paint particles and while avoiding too great of a pressure drop within that load up time.