The Ultum Nature Systems Nature Bottle Kit is the perfect hassle-free and budget-friendly solution for your CO2 needs. The kit comes with simple set up instructions and all necessary equipment needed for setting up a CO2 system. The user-friendly approach makes it extremely easy to inject CO2 into a planted aquarium. The Nature Bottle is designed to provide a natural supply of CO2 suitable for planted aquariums for up to 60 days. We recommend using one bottle per 10 – 30 gallons of water, but can be adjusted to suite aquatic plant needs and user preferences. For larger aquariums, multiple bottles can be used concurrently.