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CO2 systems

A good CO2 system and adding free available CO2 to the aquarium, besides a good fertilization, plays an important role to the growth of the plants in the aquarium. By adding CO2 to the aquarium the pH of the water lowers and makes it acidic, just as most plants and fish love it.

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  • Assemble CO2 system
    €0.00

    Put together a complete CO2 set with all the necessities to add CO2 to the aquarium without any worries. CO2 is the most important source of nutrition for aquarium plants. A good CO2 system is therefore a worthwhile investment for your aquarium.

    Select a CO2 bubble counter and CO2 diffuser yourself to complete the set for the size of your aquarium.

  • Assemble CO2 disposable system
    €0.00

    Put together a complete CO2 set with all the necessities to add CO2 to the aquarium without any worries. CO2 is the most important source of nutrition for aquarium plants. A good CO2 system is therefore always a worthwhile investment for your aquarium.

  • CO2 for Quooker
    €0.00
    Is CO2 cheaper for your Quooker? Use our pressure regulator and refillable CO2 bottles.
  • Tropica CO2 System Nano
    €98.20

    Tropica CO2 System Nano is a complete CO2 set with an elegant nano design. This allows CO2 to be added simply and accurately to a small aquarium.

  • ADA CO2 Advanced System - Forest
    €299.90
    ADA CO2 Advanced System - Forest contains everything to start adding CO2 to the planted aquarium. All the necessary materials are included to get started right away!
  • DOOA CO2 System Kit
    €269.90
    CO2 system kit contains all parts to supply an aquarium with CO2. Easy to connect and set up. It can be hung on the edge of the aquarium with the included Metal Hook.
  • CO2 pressure regulator
    €64.90

    The CO2 pressure regulator has 2 manometers. The bottle pressure can be read on one meter to see how full the bottle is, and the working pressure can be read on the other meter. The needle/dosing valve allows this to be set very accurately and a precise amount of CO2 can be dosed to the aquarium.

  • CO2 pressure regulator for disposable bottles
    €37.90
    A CO2 pressure regulator is required to reduce the pressure in the CO2 bottle (approx. 50-60 bar) to a suitable working pressure (approx. 1-2 bar). This CO2 pressure regulator is suitable for use in combination with disposable CO2 bottles with a M10x1 thread. With the preset working pressure of 2 bar and only one rotary knob, it is easy to operate.

    (not compatible with Dennerle disposable bottles)
  • Strideways PRO CO2 Regulator
    €99.90
    Professional CO2 regulator for accurately dosing CO2 to the aquarium. Equipped with 12V solenoid valve and CO2 bubble counter. Complete set, ideal for beginners with quality for professionals.
  • Strideways PRO CO2 Regulator Plus – Dual Stage
    €154.90
    Professional Dual Stage CO2 regulator for accurately dosing CO2 to the aquarium. Equipped with 12V solenoid valve and CO2 bubble counter. Complete set, ideal for beginners with quality for professionals.
  • CO2Art Pro Elite Series
    €219.99
    The CO2Art Pro-Elite Series Dual Stage CO2 Regulator is one of the most advanced CO2 pressure regulators for the aquarium. Every detail has been designed with aquarium safety and refined precision in mind. Suitable for any aquarium from 5 to 5000 liters.
  • CO2Art PRO-SE Series
    €136.99
    PRO-SE Series - updated version of CO2 Arts most popular Dual Stage CO2 Regulator for the aquarium. Completely redeveloped with a new construction for more stable pressure. Much larger internal springs ensure higher safety and greater precision at the highest level.
  • ADA CO2 System 74-YA/Ver.2
    Color: white
    €109.90

    CO2 System 74-YA/Ver.2 is ADA's solution to add CO2 to a small aquarium. This standard CO2 regulator is suitable for the ADA CO2 small cartridge. The system itself is made of reliable Japanese parts to accurately adjust the amount of CO2 fertilization.

    Colour: white or black

  • ADA CO2 Attachment Regulator
    €149.90

    ADA CO2 Attache Regulator is the standard for adjusting CO2 with a refillable CO2 bottle. A simple design with great user-friendliness and safety. The system itself is made of reliable Japanese parts to accurately adjust the amount of CO2 fertilization for a larger aquarium.

  • ADA CO2 Speed Regulator
    €299.90

    ADA CO2 Speed Regulator is the top model for adjusting CO2 with a refillable CO2 bottle. Can be adjusted very accurately (0-0.35MPa) and also very suitable for distributing CO2 to multiple aquariums. Safety, reliability and design come together in this CO2 regulator.

  • ADA CO2 System 74-SA
    €279.90

    ADA CO2 System 74-SA is the top model for adjusting CO2 with a small, disposable CO2 bottle. Can be adjusted very accurately! (0-0.35MPa)

    Colour White

  • CO2 Solenoid Valve
    €34.90

    With this CO2 solenoid valve it is possible to shut off the CO2 supply at night. A reliable solenoid valve that can easily be plugged into a timer. This prevents CO2 wastage, as an aquarium does not need CO2 at night.

  • EHEIM pHcontrol+e Set
    €274.95
    EHEIM pHcontrol+e is the smart controller for monitoring and adjusting the pH value in your aquarium. With the EHEIM pHcontrol+e, the pH of the aquarium can be easily monitored and optimized. Easily operated with a smartphone, tablet or PC/MAC via a WiFi connection and a web browser.
  • EHEIM pHcontrol+e
    €159.95

    EHEIM pHcontrol+e is the smart controller for monitoring and adjusting the pH value in your aquarium. With the EHEIM pHcontrol+e, the pH of the aquarium can be easily monitored and optimized. Easily operated with a smartphone, tablet or PC/MAC via a WiFi connection and a web browser.

    Please note: Only the pHcontrol+e and the power supply unit are included in the delivery! (excluding solenoid valve and pH electrode)

  • Dennerle pH Controller Evolution DeLuxe
    €349.90

    CO2 control in the aquarium with electronic precision: always the correct pH value of the aquarium water. The Dennerle pH Controller Evolution DeLuxe is a very complete solution to automatically supply the aquarium with the right amount of CO2.

  • CO2 bottle refillable
    Bottle content: 500 gram 2 kg 6 kg
    €42.90

    With these FULL, refillable CO2 bottles you have an affordable and sustainable solution for supplying the aquarium with CO2. The CO2 bottles are equipped with a handy carrying handle.

    Choose from:
    500 grams, 2, 6 or 10 kg

    Bottle is delivered full

  • Have the CO2 bottle filled
    Type: Swap Refill own bottle
    Bottle content: 500 gram 2 kg 6 kg 10 kg
    €7.90

    Want to fill your empty CO2 bottle? This is possible with our CO2 bottle exchange system! Filling of 500 grams, 2, 6 or 10 kg.

    Complete this form , print it out and add it to the empty bottle.

  • Dennerle CO2 disposable bottle
    Content: 500 gram 1200 gram
    €26.49

    Benefit from the convenience of a Dennerle CO2 disposable bottle. The CO2 bottle is filled with 500 or 1200 grams of CO2 and is immediately ready for use.

    Contents: 500 or 1200 grams

    Price per piece

  • Easy-Life EasyCarbo
    Content: 100 ml 250 ml 500 ml 1000 ml 5000 ml
    €5.25

    Liquid CO2 in a bottle! With a lack of carbon, a plant cannot function optimally and growth slows down. By adding EasyCarbo, aquarium plants will look strong and healthy again and algae will have less chance!

    Contents: 100, 250, 500, 1000 or 5000ml