CO2 reactors
CO2 reactors are intended for the optimal dissolution of CO2! Unlike CO2 diffusers, CO2 reactors do not release CO2 gas directly into the aquarium. Instead, aquarium water and CO2 are mixed together in a separate container (reactor). The idea is to mix the gas with the aquarium water and then let the CO2-rich water back into the aquarium / tank. There are CO2 reactors that are placed between the supply hose from the external filter or in combination with a flow pump in the aquarium.