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  • €5.00 - €120.00

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The items are moved, but everything needs to find a new spot. Orders are shipped as quickly as possible, but unfortunately it may take a little longer than you are used to from us.

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CO2 Diffusers

The small bubbles that a CO2 diffuser produces, have a large contact area. The CO2 diffusor ensures that the added CO2 in the optimal water to dissolve, and in the aquarium spreads. In an aquarium with CO2 fertilization to grow aquarium plants many times better!

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  • Azaqua CO2 Diffuser cup HQ
    Diameter: 15mm 20mm 30mm 40 50mm
    €24.90
    from €21.90

    With this CO2 diffuser we have finally managed to deliver impressive quality at an affordable price. Fine bubbles are produced and distributed evenly across the membrane.

    Select the desired type for the size of your aquarium.

  • Azaqua CO2 diffuser BOWL
    type: BOWL 30 BOWL 15
    €15.90

    The CO2 diffuser Bowl has an elegant shape and dissolves CO2 in the aquarium water. The compact CO2 diffuser produces bubbles that absorb CO2. Position the CO2 diffuser in the flow so that the CO2 is delivered directly to the aquarium plants.

    Available in 3 versions
    Bowl 15 and 30 are the new model with straight hose connection

  • Azaqua CO2 Atomizer Ultra
    Type: Small Large
    €15.90
    Azaqua CO2 Atomizer Ultra dissolves CO2 in an extremely efficient way. The CO2 atomizer is small in size and can be easily used.

    Available in Small or Large.
  • Azaqua CO2 Diffuser mini cup HQ
    Diameter: 10mm 15mm
    €24.90

    This small CO2 diffuser is ideal as a solution for adding CO2 to a small aquarium. Fine bubbles are produced and distributed evenly across the membrane.

  • Azaqua Inline CO2 atomizer
    Diameter: 12/16 mm 16/22 mm
    €24.90

    This inline CO2 atomizer ensures that CO2 is maximally dissolved in the aquarium. Not only are the bubbles extremely small (= large contact surface) thanks to the ceramic membrane, but they also come into contact with as much water as possible. Dissolving CO2 extremely efficiently!

    Double check the correct hose size



    Choose the correct diameter for 12/16 or 16/22 hose
    hose size

  • Azaqua Inline CO2 Atomizer premium
    Diameter: 12/16 mm 16/22 mm
    €25.90
    Azaqua Inline CO2 Atomizer premium is the all-in-one solution to efficiently dissolve CO2 in the aquarium.

    Available for 12/16 or 16/22 hose connection
  • Twinstar CO2 diffuser
    Type: Small Medium Large
    €8.99
    Twinstar CO2 diffuser is made of acrylic with a porous ceramic membrane on top. This membrane ensures that the bubbles that form are really very small. CO2 is thus maximally dissolved in the aquarium water.
  • Aqaurio Neo CO2 diffuser extended
    Type: Small Medium Large
    €19.90
    Aqaurio Neo CO2 diffuser extended is made of a special type of plastic with an extra long tube that can be bent to the desired height. This means it can be made to fit perfectly at a height that suits the aquarium. With other CO2 diffusers, the CO2 hose often hangs in the aquarium. That does not happen with this extended CO2 diffuser, because the connection to the hose is outside the aquarium.

    Available in size: S, M and L
    Length: 390mm
  • Aqaurio Neo CO2 diffuser Tiny
    Type: Normal Extended
    €13.90
    Aqaurio Neo CO2 diffuser Tiny is the smallest CO2 diffuser we have available. Made of a special type of plastic with a small earthenware effervescent part. The extended version has an extra long tube that can be bent to the desired height. This allows it to be made to fit perfectly at a height that suits the aquarium.

    Available in: Standard or Extended
  • ADA Pollen Glass
    €69.90

    ADA Pollen Glass is the basic model CO2 diffuser for a 60cm aquarium. It spreads the CO2 in very fine bubbles that are efficiently absorbed into the aquarium water. This model has a simple design and does not disturb the appearance of your aquascape.

  • ADA Pollen Glass TYPE-2
    €69.90

    With the ADA Pollen Glass TYPE-2 you have the perfect CO2 diffuser for your aquarium. This CO2 diffuser is of excellent quality and produces uniform, tiny CO2 bubbles that are easily absorbed by the aquarium water.

  • ADA Pollen Glass TYPE-3
    €69.90

    With the ADA Pollen Glass TYPE-3 you have the perfect CO2 diffuser for your aquarium. This CO2 diffuser is of excellent quality and produces uniform, tiny CO2 bubbles that are easily absorbed by the aquarium water.

  • ADA Pollen Glass Mini
    €109.90

    Pollen Glass Mini is designed for small aquariums with less than 5mm glass thickness and can be hung over the edge without the use of suction cups . The beautiful and ideal solution to add CO2 in a small aquarium!

  • ADA Pollen Glass Large
    Diameter: 20 mm 30mm 30mm (air)
    €119.90

    The ADA Pollen Glass Large has a larger distribution surface. With a larger diameter, the CO2 is spread very effectively. It can be placed against the side window of the aquarium.

    Choice of 20mm and 30mm
    Also available for adding oxygen (air)

  • ADA Pollen Glass Beetle
    Diameter: 30mm 40 50mm
    €109.90

    The ADA Pollen Glass Beetle has a large distribution surface. This effectively disperses the CO2 and allows it to be easily absorbed into the aquarium water. The Beetle can be placed in the corner against the side window of the aquarium.

    Select the desired size.

  • Azaqua CO2 diffuser POT
    type: POT 20 POT 30
    €9.90

    The CO2 diffuser POT has a robust shape with a large effervescent surface. The CO2 diffuser produces bubbles that easily dissolve in the aquarium water. CO2 is absorbed and is immediately available to the aquarium plants.

    Select the desired size:

  • Azaqua CO2 diffuser CUP
    type: CUP 15 CUP 20 CUP 30
    €14.90

    The CO2 diffuser CUP is an elegant accessory for fertilizing the aquarium with CO2. The membrane produces bubbles of CO2 to add CO2 to the aquarium.

    Available in 3 versions

  • Azaqua CO2 diffuser COMBI
    €14.90

    The CO2 diffuser COMBI is the ideal combination of a diffuser and bubble counter in one! By combining two accessories in this handy product, CO2 can be added to the aquarium.

  • Azaqua CO2 diffuser mini CUP
    type: mini CUP 15 mini CUP 20
    €19.90

    The CO2 diffuser mini CUP is an elegant accessory for fertilizing the smaller aquarium with CO2. The membrane produces small bubbles of CO2 to responsibly add CO2 to a small aquarium!

    Available in 2 versions

  • CO2 diffuser Stainless steel 25
    • -20%
    Azaqua CO2 diffuser Stainless steel 25
    Type: S M L XL
    €31.92 -20% €39.90

    The CO2 diffuser Stainless Steel 25 is made of high-quality stainless steel and has a ceramic membrane (replaceable) that efficiently dissolves CO2.

    Available in 4 versions: S, M, L or XL

  • Azaqua CO2 diffuser Stainless steel 15
    Type: S M
    €34.90

    The CO2 diffuser Stainless Steel 15 is made of high-quality stainless steel and has a ceramic membrane that efficiently dissolves CO2.

    Available in 2 versions: S or M

  • Azaqua CO2 diffuser stainless steel nano
    €34.90

    The CO2 diffuser Stainless Steel nano is made of high-quality stainless steel and has a ceramic membrane (replaceable) that is guaranteed to dissolve CO2 efficiently.

  • CO2Art Inline Diffuser
    Diameter: 12/16 mm 16/22 mm
    €39.99
    The CO2Art Inline Diffuser is an extremely efficient way of dissolving CO2 in the aquarium. The most striking thing, or not, is that it can be housed in the aquarium furniture. This has the advantage that there are no disturbing hoses hanging in the aquarium or a CO2 diffuser that can become algae. In addition, the solubility is very high, because CO2 dissolves directly in the flowing water.

    Available in 2 sizes:
    12/16 for 12/16 hose
    16/22 for 16/22 hose


    hose size
  • Azaqua Inline CO2 diffuser
    Diameter: 13mm 17mm
    €45.90
    from €39.90

    The Azaqua Inline CO2 diffuser can be hung outside the aquarium. This CO2 diffuser is connected to the filter hose, so that CO2 is directly carried along by the flow and dissolved in the water.

    Available in 2 versions:
    13mm or 17mm