- 100% Brand new and high quality!
- High quality of materials.
- Use with CO2 indicator.
- Easy to use and convenient to detect concentration of CO2.
- Suitable for all kinds of fish tank.
- Different color of liquid represents different concentration of CO2.
- BLUE means that CO2’s concentration is too low.
- GREEN means it is normal.
- YELLOW means that CO2’s concentration is too high so that it is harm to fish.
- A wonderful solution for feeding fish and observing their living condition.
- Type: Liquid
- Color: As Pictures Show
- Size: One Size
- Height: 7.7cm (3.03in)
- Net Weight: 15ml
- 1 x CO2 indicator Solution (without retail package).