The Fluval CO2 Indicator Set is for approximately monitoring the CO2 levels in aquariums.

Includes: CO2 Indicator, 10ml CO2 Indicator Solution, Colour Reference Stick to gauge CO2 levels.

Did you know, 40-50% of plant's dry weight is composed of carbon, yet planted aquariums lack CO2 and must be supplemented with this all important element.

Suitable for aquariums with live plants

Approximate Dimensions (Product): 14 x 10.2 x 4.5cm