Self-Adjusting Skimmer Attachment (17-18mm)

Achieve that "invisible water" look by banishing unsightly surface scum for good. This 3D-printed surface skimmer is engineered to replace standard intake strainers, instantly upgrading your canister filter setup.

Designed for 17-18mm OD (Outer Diameter) inlet pipes, this attachment features a self-floating crown that automatically adjusts to your water level/evaporation. It effectively pulls in biofilm and protein slick to maximize oxygen exchange, while the adjustable bottom intake ensures your filter never runs dry.

Why Print This?

• 🌊 Crystal Clear Water: Removes the oily biofilm layer that blocks gas exchange and light.
• ⚖️ Auto-Leveling: The floating head adapts to water level changes instantly—no manual adjustment needed during evaporation.
• ⚙️ Flow Control: Features a bottom adjustment screw to fine-tune the balance between surface skimming and bottom intake suction.
• 🐟 Fauna Safe: Intake slots are calculated to allow debris through while keeping small fish and shrimp safe.

Compatibility

• Fit: Standard hard glass or plastic pipes with 18mm Outer Diameter.
• Scalability: Can be scaled in your slicer for non-standard pipe sizes (measure with calipers first!).

Printing Guidelines

• Material: PETG, ABS, or ASA recommended (PLA may degrade in water over time).
• Walls: 5 perimeters (ensure it is watertight and sturdy).
• Infill: 25%
• Layer Height: 0.16mm (crucial for smooth movement of the floating crown).
• Supports: Minimal. Note: There is a small internal support in the tube; if it's difficult to remove, don't worry—it won't impact flow performance.

Made this? Please post a Make! I'd love to see it running in your tank.