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ATM Colony Marine 946ml (32oz)

In-Stock £29.99

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Please ensure you purchase the correct type – this is for marine saltwater, while we also list the tropical freshwater version separately.

Aquarium cycling, or the process of establishing bio-filtration for natural ammonia and nitrite removal, has been a long running issue in the aquatics hobby. Actually, establishing bio-filtration with cultured true nitrifying bacteria is a simpler dynamic than many realize. Before fish can be introduced into the aquarium, bio-filtration must be established to later out the toxic ammonia and nitrite created by fish waste.

ATM’s Colony establishes this bio-filtration in days instead of weeks with real, commercial grade nitrifying bacteria. Used by ATM, the #1 aquarium builders in the world, Colony comes in two different formulas we use to introduce fish immediately on our own custom installations.

Colony for Freshwater contains real Nitrosomonas and Nitrobacter bacteria, which are specific for the freshwater environment. Colony for Marine contains two different real strains specific for marine systems: Nitrococcus and Nitrosococcus. These formulas have proven time and again to be the champions of instant cycling on site at ATM installations. With nitrifying bacteria it is important to choose wisely.

Unlike other nitrifying bacteria products, ATM’s biological formulas are regularly used in professional industries such as public aquariums, aquaculture operations, waste water, aquaponics, seafood distribution, and much more.

As experience comes at a premium in aquatics, our team has been formulating and delivering nitrifying bacteria longer and better than any other in the world.


• Real Nitrifying Bacteria Establishes Instant Bioltration
• Neutralizes Ammonia and Nitrite Spikes Naturally
• Two Different Formulas For Freshwater And Marine Systems
• All Natural
• Used By ATM!

Below we outline our Terms & Conditions for our Delivery of Goods

Our desire is to see customers who purchase products online receive the same excellent service as we endeavour to provide in store. To this end, we have provided a system which will allow you to find the products you want, pay for them securely, and receive them in prompt fashion.

At present, we only deliver within the United Kingdom & the Republic of Ireland, and do not deliver on Saturdays, Sundays or Bank Holidays. We have a few options for delivery, and these are offered at checkout.

We subsidise our delivery charges so you receive your products without too many additional charges, yet for our standard delivery we have set the charge at £3.99.

There are exceptional delivery charges, and these will be outlined on checkout.

Terms & Conditions can be viewed here