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ATM's Colony speeds up this process and establishes biofiltration in days instead of weeks. Colony for Saltwater (Marine) contains strains specific for marine systems: Nitrococcus and Nitrosococcus. This formula has proven to be the premier instant cycling for all saltwater aquariums.
Before fish can be introduced into the aquarium, biofiltration must be established to filter out toxic ammonia and nitrate created by fish waste.