1. Accurate Counting: It can accurately record the number of carbon dioxide bubbles, helping users accurately master the carbon dioxide input volume, and thus better control the carbon dioxide concentration in the aquarium. 2. Glass Material: The glass material is selected, which has good transparency, is convenient for users to clearly observe the bubble counting situation. At the same time, the glass material is durable and not easily corroded by chemical substances. 3. Wide Application: It is suitable for various aquariums, whether it is a small desktop aquarium or a large - scale professional aquatic plant tank, and can play its accurate bubble - counting function to meet the needs of different users.