Co2 Reactor Air Diffuser Generator Double Connector Tube Valves Guage Bottle Cap Diy Aquarium Supplies

feature:
If the aquatic plants in your fish tank/aquarium are slow growing and need more CO2, this bottle cap may help you

Description:
Name: Co2 Reactor 

Category: Aquarium Equipment
The specifications of the trachea connected by the joint are: inner diameter 4MM outer diameter 6MM
Material: All are high quality ABS engineering plastics
The details of the materials are real, the design is exquisite, and the production is precise

Packing list:
1 x Co2 Reactor 
Note:
Different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.