Reef Octopus 110S Protein Skimmer CO2 Scrubber and Silencer

I made this design to suppress the noise of 110S and absorb CO2. (So, elevate the pH.)

There are three alternatives.

• CO2 Scrubber and outside air intake. It would be best if you connected an air pump to the top tube inlet. Print cup + lid with the inlet.
• CO2 Scrubber. Just print cup and lid.
• Silencer. If you don't need a CO2 Scrubber, you can print a standalone silencer to reduce the humming sound.

For all three options, place two standard 6mm air pipes under the cup. You will get better results than the original silencer of 110S. If you use the CO2 scrubber, put a thin layer of napkin/cotton at the bottom of the chamber to prevent clogging. Change the CO2 Absorbent material (Soda Lime) once a week. It keeps my pH at an 8.4'ish level.