Talk with the Expert | International and European shipping | Free Shipping for Orders over 69€ | Shipping within 24 hours
PERMANENT CO₂ TEST – Dennerle Long-Term Monitoring Kit for Aquarium CO₂ Control
The Dennerle Permanent CO₂ Test is a practical and accurate tool designed for continuous monitoring of dissolved CO₂ levels in your aquarium. Using a ready-to-use indicator solution, this test displays the CO₂ concentration in mg/l and the corresponding pH value through a simple color change, eliminating the need for complicated setups or mixing with tank water.
Unlike conventional long-term tests that may be affected by humic acids, nitrates, or require prior KH testing, the Dennerle CO₂ Test uses a pure solution that does not react with other substances in the water. It provides reliable and independent readings and is especially useful for aquariums with pressurized CO₂ injection systems.
The included color scale allows for easy comparison and interpretation of six different CO₂ levels, helping aquarists maintain optimal conditions for healthy plant growth and stable pH.
The kit includes:
Glass test vial
5 ready-to-use CO₂ indicator pipettes (replace every 4 weeks)
Color comparison chart
Key features:
Permanent visual display of CO₂ concentration in mg/l
No need to mix with aquarium water
No KH measurement required
Uses ready-to-use indicator solution with high stability
Easy color-based reading
Ideal for CO₂-regulated planted tanks
Helps prevent CO₂ overdosing or deficiency
Note: not suitable for measuring liquid carbon-based fertilizers (such as Carbo Booster Max or Carbo Elixeir Bio), which do not contain actual CO₂ gas but other carbon compounds not detectable by this test.
Why choose the Dennerle Permanent CO₂ Test:
This kit offers real-time, accurate CO₂ monitoring without complicated setup or manual calculations. It is essential for aquascaping enthusiasts and CO₂ users who need a reliable, hassle-free way to keep their aquatic environment balanced and healthy.
English 
Italiano 
