Air Stones & Diffusers

Air Stones & Diffusers

Air Stones & Diffusers

The final stage of delivering air in to water and by no means the least important. We have a very comprehensive range of air delivery diffusers. Budget stone, ceramic stones and micro rubber diffusers. All products have been chosen to offer long life spans and produce fine air bubbles to assist in the oxygen being absorbed into the water.

All life sources, Koi and aerobic bacteria in particular are reliant on the water they are in having sufficient oxygen. As a rule of thumb a minimum amount required is 6mg per litre of water to provide a healthy suitable environment, but the more oxygen the better.

  • Ceramic 50mm Round Air Stone

    £3.95

    50mm Round Air Stone. 50mm Round Air Stone

    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    Buying Guide
    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can therefore use air pumps and air stones in order to distribute the air evenly through the pond water. Above all Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. Usually a modern Koi pond mixes multiple methods of aeration. Therefore This helps to create the best possible water conditions in order for your Koi to thrive. We believe we stand out from the crowd. In order to find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium.

    £3.95

  • Ceramic Cylinder style Air Stone

    £5.49£22.95

    Ceramic Cylinder style Air Stone Air Stone Sizes available:
    • 30mm x 130mm
    • 50mm x 200mm
    • 50mm x 300mm

    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    Buying Guide
    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can therefore use air pumps and air stones in order to distribute the air evenly through the pond water. Above all Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. Usually a modern Koi pond mixes multiple methods of aeration. Therefore This helps to create the best possible water conditions in order for your Koi to thrive. We believe we stand out from the crowd. In order to find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium.

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  • Ceramic Flat Air Discs

    £11.95£24.95

    Ceramic Flat Air Discs Ceramic Flat Air Discs Sizes available:
    • 120mm Diameter
    • 200mm Diameter

    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    Buying Guide
    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can therefore use air pumps and air stones in order to distribute the air evenly through the pond water. Above all Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. Usually a modern Koi pond mixes multiple methods of aeration. Therefore This helps to create the best possible water conditions in order for your Koi to thrive. We believe we stand out from the crowd. In order to find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium.

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  • Economy 2″ Round Air Stone

    £1.49

    2″ Round Air Stone 2″ Round Air Stone available for delivery uk wide.

    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    Buying Guide
    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can therefore use air pumps and air stones in order to distribute the air evenly through the pond water. Above all Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. Usually a modern Koi pond mixes multiple methods of aeration. Therefore This helps to create the best possible water conditions in order for your Koi to thrive. We believe we stand out from the crowd. In order to find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium.

    £1.49

  • Rubber Air Diffusers

    £14.95£29.95

    Sizes available: Rubber Air Diffusers Rubber Air Diffusers are available in;
    • 250mm
    • 510mm
    • 760mm
    • 1000mm

    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    Buying Guide
    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can therefore use air pumps and air stones in order to distribute the air evenly through the pond water. Above all Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. Usually a modern Koi pond mixes multiple methods of aeration. Therefore This helps to create the best possible water conditions in order for your Koi to thrive. We believe we stand out from the crowd. In order to find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium. Utopia Koi deliver the Stainless Steel Air Dome UK Wide. Buy online today or contact us for more information.

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  • Spindrifter Freestanding Stainless Steel Air Dome

    £74.95

    Heavy duty stainless Steel weighted base with a spin drifter air dome allowing additional air to be added to any pond when required. The base allows the Stainless Steel Air Dome to be located in the chosen area of the pond and gives a permanent feel. Simply connect an airline and an air pump of your choice.


    In order to have a healthy eco environment in your pond you need four elements working in harmony with one another. Biological filtration, adequate water circulation, enough water volume for you fish stocking density and last but not least a source of water aeration. Koi and the beneficial bacteria in your filtration system need oxygen.

    In general 40 litres of air per 1000 UK gallons is a sensible level to work towards. Bear in mind whilst calculating the size of an air pump. We recommend adding as much air to your pond as you can. You can use air pumps and air stones to distribute the air evenly through the pond water. Don’t forget a pond is a living eco system and the amount of oxygen water can hold at saturation therefore alters depending on water temperature, atmospheric pressure and water salinity but to keep things simple. Water can hold less oxygen as it becomes warmer. Respiration of you Koi increase with warmer water, so more oxygen is needed. Usually a modern Koi pond mixes multiple methods of aeration. This helps to create the best possible water conditions in order for your Koi to thrive.

    A healthy Koi pond requires aeration. Take a look through our select range of air products for all your requirements. We believe we stand out from the crowd. To find out more visit the About us page. We deliver UK and Ireland wide and can help advise you on the best solution for your pond or aquarium.

    £74.95

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Pond liner calculator

Use our simple Pond Liner Calculator to estimate the liner and/or underlay size required for your pond.

The result allows for an overlay either side of 30cms. You may wnat to increase or decrease this value depending on your pnd installation.

If you're not sure on what size you need then contact us and we can help.

Measurements are entered in meters. As an example if your pond is 254cm deep at its deepest enter 2.54.

The liner dimensions for your pond including a 30cm over lap are:

Liner length:

Liner width:

An interesting fact for you. The water volume of your pond will be:

Litres:

UK gallons:

Rectangle Pond Volume calculator

Pond Diagram

Measure the length of your pond, the width of your pond and the depth of your pond in meters and enter the measurements into the Utopia Koi easy to use pond volume calculator. This will give the volume in litres.

If you're not sure on what size you need then contact us and we can help.

Measurements are to be entered in meters, for example: 543cm would be entered as 5.43.

The water volume of your pond will be:

Volume in Litres:

Volume in UK gallons:

Circular Pond Volume calculator

Radius Diagram

Measure the diameter of your pond (the distance across the pond at its centre) then divide the diameter in two to get the radius of your pond.

Now measure the depth of your pond and enter the measurements into the Utopia Koi easy to use circular pond volume calculator.

If you're not sure on what size you need then contact us and we can help.

Measurements are to be entered in meters, for example: 543cm would be entered as 5.43.

The water volume of your pond will be:

Volume in Litres:

Volume in UK gallons:

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