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  • Choosing a Fish

    Choosing the right fish is not an easy job for anyone new to the hobby, and most experienced aquarists have at some point purchased a species they would not have gone near in hindsight. 

    Aquarium Size

    For many years, aquarists have used guidelines that relate the size of the fish to the volume of the tank. The most common guide when choosing an aquarium size is one inch of fish per gallon of water. 

    Setting Up Tank

    Learning how to set up a fish tank is not all that difficult, but there are some steps you should follow for a freshwater aquarium setup.


    When it comes to freshwater aquarium filters you should consider a filter that has three stages of filtration: mechanical, chemical, and biological.


    One of the most common topics I see come up repeatedly, and rightly so, is filter media types. There seems to be an endless variety of filter media options.

    Water Cycling

    To cycle, a fish tank basically means to establish, cultivate or grow a bacteria colony inside your filter. As complicated as it may sound, it really is as simple as waiting for bacteria to grow.  

    Fish Food

    The nutritional requirements of fish vary greatly depending on species, as well as age. To maintain healthy fish, it is essential to choose the right aquarium fish food.  


    Good aquarium maintenance practices will lead to a healthy aquatic environment and thriving fish, providing years of joy for the hobbyist. 

    Fish Health & Disease

    The best prevention against disease is to keep your fish healthy, in a stress-free environment. A varied, proper diet, stable water temperature and good water parameters.  


    OATA have created a number of ‘how to’ leaflets and caresheets to download

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