Aquarium Water CO2 Indicator Solution | Fish Tank Water Carbon Dioxide Level Reagent

asy to use and see the concentration of CO2 in the fish tank. By taking a sample of water from the tank and mixing a drop of this indicator solution, you will see the solution turning into different colors from which each color indicates CO2 concentration in the water. A blue color means that CO2's concentration is too low, green means it is normal, and yellow means that CO2's concentration is too high, so it is causing harm to fish.


  • Indicator Colors: Blue, Green, Yellow
  • Dispensing Method: Drops
  • Net Content: 15ml
  • Size: 30mm x 60mm