Internal Aquarium & Fish Tank Filters

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    Internal Aquarium Filters from AllPondSolutions

    When selecting the best aquarium filter for a small to medium tank, an internal filter from AllPondSolutions could be just what you need for your aquarium. Internal fish tank filters are compact and sit inside your aquarium, offering an ideal space saving option for customers who do not have room for a larger external filter.

    Browse our range of aquarium internal filters online.

    Buying guide

    Getting the flow rate right makes all the difference to water clarity and fish health, so aim for a filter capable of turning over your tank's total volume at least four times per hour as a general guide, more if your tank is heavily stocked. If you're unsure exactly what that means for your setup, our aquarium filter size calculator makes it easy to work out the right output before you buy. Beyond capacity, look at what's inside: filters combining mechanical and biological media will clear debris while also breaking down harmful waste, keeping your water safe between cleans. A well-matched internal filter also creates gentle surface movement that helps oxygenate the tank, giving your fish a healthier, more natural environment with minimal ongoing effort on your part.

    7 products

    700 L/H Aquarium Fish Tank Internal Filter with 9w UV - 700IF+
    700 L/H Aquarium Fish Tank Internal Filter with 9w UV - 700IF+
    £34.99
    Aquarium Internal Filter – 200 to 1200 L/H
    6 models
    Aquarium Internal Filter – 200 to 1200 L/H
    from £7.99
    Aquarium Internal Filter – 500 to 2500 L/H
    4 models
    Aquarium Internal Filter – 500 to 2500 L/H
    from £11.99
    Aquarium Internal Corner Filter – 250 to 650 L/H
    3 models
    Aquarium Internal Corner Filter – 250 to 650 L/H
    from £10.99
    Aquarium Internal Filter with Adjustable Flow – 600 to 1500 L/H
    3 models
    Aquarium Internal Filter with Adjustable Flow – 600 to 1500 L/H
    from £11.99
    INFIL Aquarium Internal Filter – 500 to 1500 L/H
    5 models
    INFIL Aquarium Internal Filter – 500 to 1500 L/H
    from £13.99

    Not sure which filter?

    Green or cloudy water?

    The 700IF+ has a built-in 9w UV – our best-selling internal filter

    Short on space?

    A corner filter (CIF) sits neatly in the corner of the tank

    Want to control the flow?

    IFC and I-series filters have adjustable flow

    Waste on the tank floor?

    An INFIL filter draws water from underneath, where most waste settles

    Internal Aquarium Filter with Strong Oxygenation – 370 to 1500 L/H
    4 models
    Internal Aquarium Filter with Strong Oxygenation – 370 to 1500 L/H
    from £13.99

    Why Buy Your Internal Fish Tank Filter from Us?

    We offer a range of internal filters for aquariums up to 500 litres. For larger setups, more than one filter will be required to ensure an effective level of filtration.

    What does our selection offer?

    • Internal aquarium filters in a range of many sizes, from 200 to 1850 litres per hour
    • Internal filters suitable to place in the corner of a tank
    • Filters with an integrated UV steriliser

    Should you wish for more information about the range of sizes and options available, we’d love to help. Replacement filtration media is also available on our site, as are UV bulbs

    Shop Online for Aquarium Internal Filters

    When it comes to the health of your tank, at AllPondSolutions we understand that only the best will do, which is why our internal aquarium filters come in such a comprehensive selection. We also pride ourselves in our customer service, meaning we hope you’ll enjoy your shopping experience with us.