Frequently Asked Questions (FAQ)

Frequently asked questions and answers on ADA products are provided for your reference. See the FAQ if you have any questions on how to choose or use ADA products.

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

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.

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 silicon may have been hardened and causes difficulty in removing the silicon tube. In this case, replace with a new silicon tube. A silicon tube is contained in Clear Parts Set (or Gray Parts Set).

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 tank and clean it with glassware cleaner Superge to maintain the diffusion filter clean and white. Long-term use of commercial chlorine bleach may cause clogged diffusion filter as it contains surfactant and the foam will stay longer. Be sure to use glassware cleaner Superge to clean Pollen Glass and other types of glassware. Superge is a surfactant-free product.

Q. Air bubbles from Pollen Glass became coarser. Is it due to failure of Pollen Glass?

A. Clogged diffusion filter is suspected. Soak the Pollen Glass in the solution of glassware cleaner Superge. If no improvement is observed even after cleaning with Superge, soak the Pollen Glass overnight in vinegar and then rinse well with running water before reattaching it to the aquarium.
If you scrub the diffusion filter with a brush, etc. during cleaning, the diffusion filter may get scratched or damaged and can result in coarser air bubbles. Be careful of the handling of diffusion filter as it cannot be replaced or repaired.(“Cleaning of Pollen Glass” on YouTube)

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 CO2 Regulator. The length of silicon or pressure resistance tube should be minimal. If there is no choice but a long tube is required for large aquarium tank, you may additionally install Speed Controller near the CO2 Bubble Counter (or CO2 Beetle Counter) for easy fine adjustment. This problem is also observed if CO2 is leaking due to damaged check valve. Replace the plastic check valve with a new one about once a year. Check valve is contained in Clear Parts Set (or Gray Parts Set).

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 pressure within the tube. This is not abnormal. The time of CO2 coming out due to residual pressure can be shortened by minimizing the tube length.
If CO2 is continuously supplied even without residual pressure, clogged solenoid valve with fine particles can be suspected. In this case, connect a Ball Valve to “OUT” side of the solenoid valve (or NA Control Timer) using a pressure resistance tube, etc., and increase the pressure by closing the Ball Valve while the solenoid valve remains ON. Then, open the Ball Valve in one shot to release pressure to blow away the particles with a jet of CO2. Particles buildup which causes clogging can be removed by repeating the above procedure a few times on “IN” and “OUT” sides alternately.

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 have a straight cut section.
CO2 may also leak in the event where Joint Stick and fitting are not in proper contact. To check CO2 leak, apply soap water (or diluted neutral detergent) to the connection while CO2 is being supplied and observe whether bubbles are formed or not (If CO2 is leaking, bubbles are formed).

How to Setup NA Goods Videos