CO2 Flipper
thingiverse
Here's a fresh look at it. A flipper on your aquarium that helps keep CO2 levels in check from behind is exactly what you need to give your plants the perfect environment to thrive.
Download Model from thingiverse
With this file you will be able to print CO2 Flipper with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on CO2 Flipper.