Bacto Gel is comprised of living bacteria especially developed for the start up and maintenance of biological filtration through a nitrification effect, rendering harmful substances safe. Bacto Gel is developed especially for filter systems, the gel formulation allows bacteria to adhere to the filtration media more effectively. Bacto Gel bacteria shorten the start-up time of a filter system. A process usually requiring 6-8 weeks may be shortens to 2-4 weeks. Bacto Gel bacteria are 100% natural, they do not contain any chemicals and are free of pathogens. TYP