EHEIM - the technical pioneer in aquaristics, is expanding its product range with three CO2 systems for aquariums from 200 to approx. 600 liters. While the entry-level system for smaller aquariums up to 200 liters is equipped with a disposable bottle, the two larger systems come with a 500 g or 2,000 g reusable bottle. The advantage is obvious - the CO2 bottles can always be refilled. All three systems are fully equipped and ready to use immediately after installation. An EHEIM CO2 system ensures magnificent plant growth in the aquarium. Good plant growth is the best precaution against unwanted algae growth in the aquarium.