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The One That Works! Utilizing authentic true nitrifying bacteria, Colony establishes bio-filtration in days instead of weeks. As trusted by public aquariums around the world, including Sea Life centers, Colony’s claim to fame is through results proven in every corner of the globe and in a variety of systems.

Trusted by public aquariums around the world, Colony true nitrifying bacteria is the standard when it comes to establishing bio-filtration instantly. Before fish can be introduced into the aquarium, bio-filtration must be established to filter out the toxic ammonia and nitrite created by fish waste. ATM’s Colony establishes this biofiltration in days instead of weeks with real, commercial grade nitrifying bacteria.

Used by ATM, the #1 aquarium builders in the world, Colony contains real Nitrosomonas and Nitrobacter bacteria, which are specific for the freshwater environment.

Real Nitrifying Bacteria Establishes Instant Biofiltration

Neutralizes Ammonia and Nitrite Spikes Naturally

Two Different Formulas For Freshwater And Marine Systems

Used By ATM!

Colony Marine 4oz treats 25 gallons