The present invention provides for a slow release composition, preferably as a tablet, for industrial water systems, under an alkaline pH or high water hardness, using as an active ingredient a multifunctional amine of Formula (I) and a hydrophilic polymer, and other components such as a compression agent, in one composition as a biocide, biostat, biodispersant, deposit penetrant aid, organic deposit remover, detergent, surfactant, antifoam, scale inhibitor, scale remover, and a corrosion inhibitor. The composition is used in multiple water cycles, can remove, disperse or inhibit fouling. The active ingredient(s) of the composition is released over a long time, up to 6 months.
