Mini Bubble Counter D-518 The Mini Bubble Counter D-518 is your essential companion for monitoring CO2 flow in your aquarium or planted tank. Achieve optimal conditions for aquatic plant growth and maintain a healthy environment for your aquarium with this compact and reliable tool. Key Features: Compact and reliable design - Designed for long-lasting performance Precisely measures CO2 flow - Offers accurate monitoring for ideal CO2 levels Ensures optimal conditions for aquatic plants - Contributes to thriving plant growth Contributes to a healthy aquarium environment - Helps maintain a balanced ecosystem Benefit from the Mini Bubble Counter D-518's compact size and efficient functionality, allowing you to easily integrate it into your aquarium setup and maintain a thriving underwater ecosystem.