Aquarium Check Valve-Regulator Aquarium Diffuser Fish for CO2 Bubble Counte
brand new and
Features:
material, which will be and
With non-return function to prevent the backflow when the pressure changes, and this can ensure the water plant table and CO2 bottle from damage.
It can count the of carbon dioxide and supply the with enough carbon dioxide.
East to install and use, a good choice to make your fish for different.
Double for head and single for head are available, you can choose according to your needs.
Bubble Counter only,other accessories in the picture is not included.

Specification:
Aluminum Alloy
Size: app.7.9x2.1cm/3.11x0.83in
Color: Silver
Optional
Quantity: 1 Pc
Install
Single for Head Bubble Counter:
1. Take out the seal and install on the trachea of the valves, then tighten the bubble counter.
2. Add 4/5 water in the bubble counter and then tighten the top cover. Plug the CO2 and then tighten the trachea fastening nut.
Double for Head Bubble Counter:
Add 4/5 water in the bubble counter and then tighten the top cover. Plug the CO2 and then tighten the trachea fastening nut.

Note:
No retail package.
Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package Contents:
1 Bubble Counter