Q. I cannot put the tube to the glass tube properly.

A. Be sure to use a soft silicon tube for connection. A hard tube such as Pressure Resistance Tube cannot be connected to the glass tube. Wet the connection of the glass tube with water and insert it into the silicon tube by slowly pushing it in (about 5-10mm).

Q. The tube does not come out of the glass tube properly.

A. When silicon tube cannot be removed, do not force pull it out but cut open the silicon tube with a cutter knife, etc. to remove it. If the glass tube and silicon tube are left connected for a long period of time, the...

Q. Connected tube comes off by itself.

A. Is the diffusion filter of Pollen Glass clean? Dirty diffusion filter leads to higher pressure within Pollen Glass and this can cause the tube to come off easily. As a solution, remove the Pollen Glass from the aquarium...

Q. I cannot fine-adjust the CO₂ supply rate with CO₂ Regulator (fine-adjustment screw).

A. If the CO₂ tube is too long, it is hard to fine adjust the CO₂ supply rate with the fine adjustment screw on CO₂2Regulator. The length of silicon or pressure resistance tube should be minimal. If there is no choice...

Q. CO₂ supply does not stop when the timer is OFF.

A. When NA Control Timer is used or a solenoid valve is connected to the timer, a small amount of CO₂ may continue to be supplied for several minutes or much longer immediately after the timer is switched to OFF due to residual...

Q. I’m afraid that CO₂ is leaking. How can I check?

A. CO₂ tends to leak at the connection to the tube and at the check valve. CO₂ may leak if the cut section of pressure resistance tube is not straight. If the cut section is diagonal or not straight, cut the tube again to...