1. Made of high quality glass
2. Made with fine ceramic, diffuse effectively
3. Durable use and less spaced
4. Fine designed
5. Total Length 18cm
6. Only suitable for 4,5, 6mm Glass Thickness
Ceramic Disc increase the Co2 dissolved effect
The usage of CO2 will much less than even,it also come out with complete dissolved rate and produces excellent effect for the aquarium.