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 or aerate, simply raise the outflow funnel halfway above the water line.
Does the outflow create a vortex at the water surface?
How to convert the high-flow bubble rate to the normal-flow bubble rate?
What is the appropriate CO2 bubble rate for my aquarium?
What does a bubble counter do?
Can I use a 4dKH solution in place of the supplied Indicator Solution?
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