Fluval CO2 Pro Indicator Set

The CO2 Indicator Set performs the simple and important task of monitoring carbon dioxide levels in aquarium water to help you keep healthy live plants.

Visibly changes colors to indicate low, ideal or high CO2 levels

The solution lasts up to 30 days replace monthly to maintain accurate performance

Conveniently mounts to glass aquarium walls

Key Features:

• Changes colors to indicate CO2 levels
• Solution lasts up to 30 days
• Easy to read
• Easy to set up