Fluval Pressurized CO2 Indicator Refill Solution 10ml Fluval CO2 Indicator Liquid is a replacement liquid for the Fluval CO2 Indicator. It helps monitor approximate CO2 levels in aquariums. Key Features Replacement liquid for the Fluval CO2 Indicator...

Fluval Pressurized CO2 Indicator Set Fluval CO2 Indicator Kit is used to monitor approximate CO2 levels and also helps gauge CO2 levels in aquariums. Key Features Monitors approximate CO2 levels and also helps gauge CO2 levels in aquariums.