Eheim CO2 sets offer a simple and reliable way to supply the correct amount of CO2 into your aquarium for healthy plant growth.

Aquarium water usually contains too little carbon dioxide (CO2) as it has already been extracted from the tap water at the waterworks. 

In addition to light, nitrogen, phosphate, and trace elements, etc., the most important nutrient for aquarium plants is CO2 and, the stronger and healthier the plants, the less chance algae has to grow.

Plants also produce more of the oxygen that fish need to breathe, and CO2 also regulates the pH values in the water, when dosed correctly.

When using one of these systems, especially with correctly dosed plant food, you will see a marked improvement in plant growth and health. Some plants with low or slow nutrient uptake, may only need a CO2 kit and regular partial water changes to help them flourish.

These kits include:

• Refillable 500g CO² bottle.
• Precision pressure reducer with manometers and precise dosing valve for reusable systems with W 21.8 x 1/14” thread connection.
• 360° rotating hose connection.
• CO² specific safety hose, pressure resistant, 3m, Ø 4/6 mm.
• CO² safety diffuser including bubble counter and non-return valve for effective CO² dosing.
• 5 x water test strips for analysis of the initial water values
• CO² long-term test and indicator reagent for permanently measuring of the CO² content in the aquarium.
• Safe and tool free installation
• Made in Germany.
• 3 years guarantee.

Optional accessories (not included):

• MC356 CO² magnetic valve (night shut-off) for linking up to Eheim powerLED+ lighting units.
• MC361 EHEIM pHcontrol+e Wireless pH Controller Set for monitoring and readjusting the pH value in the aquarium.