Converting the high-flow bubble rate to the normal-flow bubble rate can be done by doing the following: 1) Measure the rate in normal-flow mode. (A bubbles per second) 2) At the same CO2 rate, measure the rate in high-flow mode: (B bubbles per second) 3) Divide A by B Example: 1) In the normal-flow mode, [...]

Determining the appropriate amount of CO2 based solely on the bubble rate is not recommended. This is because there are numerous factors that eventually determine how much CO2 gas actually gets dissolved inside your aquarium. It is recommended that the counter be used to monitor the rate of CO2 injection into the tank, while a [...]

At high CO2 flow rates, you may see irregular bubble rates with the normal-flow configuration. To solve this, switch to the high-flow configuration.

Bubble counters are used to monitor the CO2 injection rate into your aquarium. When installed within the CO2 line, the CO2 emerges as a series of bubbles raising up the device, allowing easy monitoring of the CO2 rate. It also gives you a visual observation to help you make fine adjustments in your CO2 rate.

Our CO2 indicator solution is highly accurate and takes into account all the factors affecting the final solution properties.  While you can use other 4dKH solutions with our CO2 checkers, the accuracy and color shade may not be consistent and therefor not recommended.

To best prolong the life of the solutions, cap unused solutions tightly and keep in refrigerator. Do no freeze.

The diffusers can be cleaned by soaking in 1:1 mixture of bleach:water for 24 hours. Depending on the amount of build up on the glass surface, longer immersion times may be needed. After that, rinse thoroughly with clean water.  Do not scrub the diffuser disc or it may damage the fine pores.

Similar to other diffusers, the inline diffuser disperses CO2 gas into a fine mist of bubbles. The turbulent flow around the diffuser disc acts to actively dissolve CO2 into the outflow stream. However, there still may be a fine mist of bubbles entering the aquarium depending on the CO2 and filter flow rate.

Certain funnel designs are easier in creating a surface vortex than others.   In contrary to some beliefs, we found that vortices generated by certain outflow designs are not effective in eliminating surface film. Because of this, we focused our outflow design on improving circulation to lower parts of the aquarium. To eliminate surface film [...]

Occasionally, people report that their baby shrimps get through the pipes. That is something to consider.  Adult cherry shrimps will not pass through the slits. However, baby shrimps that are less than 2-3 millimeters can slip through.