CO2 Reactor Sera FLORE Active Reactor 500 (model 007341) for Aquarium CO2 Regulation

Sera FLORE Active Reactor 500 is a CO2 reactor designed to improve dissolution and distribution of carbon dioxide in planted aquaria. The device is intended for connection to external filters or pump outlets and facilitates transfer of CO2 into the water column, supporting stable CO2 levels and more uniform distribution throughout the tank. The compact inline design is made to integrate with existing circulation equipment and reduce CO2 loss to the surface.

Advantages

The reactor increases the efficiency of CO2 dissolution by prolonging contact time between gas and water and by creating fine bubbles or increased mixing, depending on installation. It is suitable for continuous operation with external filtration systems and reduces visible CO2 oversaturation at the surface. The unit is built to fit common plumbing connections used in aquarium setups and is compatible with standard external pump flows in small to medium planted tanks.

Suitable for

• Planted freshwater aquaria requiring stable CO2 dosing
• Setups with external canister filters or inline pumps
• Tanks where even CO2 distribution and reduced surface loss are needed
• Hobbyist systems aiming to improve plant growth and prevent CO2 gradients

Key specifications

• Inline CO2 reactor for connection to external filter or pump outlets
• Designed for small to medium planted aquaria
• Improves gas exchange and CO2 dissolution into the water column
• Compact footprint for integration with existing circulation equipment
• Operates continuously with external filtration flow

How to use

Install the reactor in the return line of an external filter or after an inline pump so that water flows through the reactor body. Connect CO2 supply to the reactor according to the manufacturer's connection points, ensuring secure fittings and leak-free joints. Adjust the external CO2 regulator and bubble count to the aquarium's plant load, then monitor CO2 levels with appropriate testing methods. Regularly inspect connections and clean the reactor as required to maintain flow and gas exchange efficiency.

Usage recommendations

Use the reactor in systems with stable external flow and matched pump capacity. Monitor aquarium CO2 concentration and plant response after installation; avoid abrupt changes in CO2 dosing. Periodic cleaning of the reactor and checking of seals will maintain performance and longevity.