All plants need carbon dioxide to live and grow, but aquarium water is often deficient in CO2. Dennerle has a variety of products that will add CO2 and essential nutrients to your aquarium so your plants will thrive.
We are a Dealer/Reseller of the Transworld Aquatics Line of JBJ Products. For warranty information please contact us and we will fwd you to the correct place. Most of their products carry at least a 1 year warranty.