If the plants in your fish tank / aquarium are slow growing and need more carbon dioxide, this bottle cap can help.
- Suitable for all carbonated beverage bottle mouths, regardless of size. For example, Cola, Sprite, Fanta, Qixi, Mei Nida and so on. (Please note that juice bottles and mineral water bottles must not be used.)
- The special sealing ring for the cap is made of imported silica gel, which is resistant to acid and alkali.
Package includes: 1 Pc Carbon Dioxide Generator Bottle Cap