Tube ventilation cap/filter

I uploaded several sizes to fit various standard sizes of tubes and pipes. The sizes are the following:   I also uploaded the Fusion 360 file with all the parameters set for you to make your custom size cap if none of the above fit your pipe.      Materials: Pick materials that are safe for both your fish and plants. It's usually recommended to use ABS or specific food-safe PLA, and it's often advised to coat the print in a safe epoxy to seal it.  To legally sell PRINTED models, you may obtain my permission through this link: https://www.patreon.com/SpikeMix3D