This is a diffuser for the Python water changer. It slows the water when refilling the tank to prevent the incoming water from disturbing the substrate material (sand, gravel, plants, etc).
This design is a fun use of the PrusaSlicer “Height Range Modifier” feature to turn the solid base of the model into a diffusing screen. The Fusion360 file is a simple hollow cylinder with a solid base. You can adjust the diameter, overall length, and diffusing screen thickness (solid base thickness) to your liking. Parameters can be changed by opening the .f3d file in Fusion360 and going to Modify>Change Parameters.
The parameters of the posted model are:
Diameter: 51mm
Overall Length: 50mm
Screen (solid base) Thickness: 20mm
The posted .3mf and G-code's Height Range Modifier settings are:
Start at Height: 0 mm
Stop at Height: 20 mm (thickness of solid base)
Fill Density: 20%
Fill Pattern: Gyroid
Bottom Solid Layers: 0
Perimeters: 4
Top Solid Layers: 0
Filament used in photos is Prusament PETG in Galaxy Black.
The author marked this model as their own original creation.