BLACK CO2 RESISTANT TUBING
Why using CO2 resistant / proof tubing for your aquarium you will save money in the long run.
With typical tubing you can lose as much as 35% of the CO2 before it even enters you aquarium though standard silicone tubing , but by using high quality industrial grade CO2 resistance tubing you can reduce the lose of CO2 down to a minimum and this will save in the refill of your CO2 tanks in future.
How to fix the CO2 tubing to your other CO2 equipment?
Gently heat up the end of the tubing with a lighter or other forms of heat and this will soften it enough for you to push your tubing on.
Don't over push as the glass equipment can easily break. If it does not fit first time just heat up the tubing again.