The ISTA Disposable CO2 Diffuser Set offers a simple and effective way to supply essential CO2 to your planted aquarium, ideal for nano or medium tanks. Designed for water plant photosynthesis, this set is particularly suited for beginners and low-light tanks with modest CO2 demands. The disposable CO2 canister can last for months when correctly set up at a rate of one bubble every five seconds. For optimal diffusion, the CO2 diffuser should be placed at the very bottom of the tank. These sets are easily adaptable to any kind of tank, including plug-and-play setups, ensuring healthier aquatic plant growth.