A parametric, fish-safe diffuser for 16 mm aquarium filter outlets featuring adjustable flow control, tool-free installation, and support-free printing. Flow intensity is regulated via a sliding sleeve, while a custom hose clamp ensures secure attachment without leaks. No hardware beyond a single M4 screw is required—though the M4 can be 3D printed if preferred.

Features:

• Pipe Diameter: Adjust to fit your specific filter outlet size exactly.
• Body Length: Change the total height of the diffuser.
• Wall Thickness: Adjust how thick or thin you want the parts to be.
• Hole Shape: Choose between Circle, Teardrop, Square, or Hexagon holes.
• Hole Size: Scale the size of the water dispersion holes up or down.
• Sleeve Texture: Change the outer ring style to Smooth, Knurled, or Hexagon.
• Top Cap Shape: Toggle between a Sphere or a Blunt Triangle top.
• Top Hole Density: Control how many rows of holes are on the top cap and their size.
• Clamp Fit: Adjust the screw hole size (e.g., for M3 or M4 screws) and the clamp's flexibility.
• Print Tolerances: Fine-tune the gap between moving parts (sleeve and clamp) for your specific printer's accuracy.

Required Hardware: 1× M4 screw (20–25 mm). Note: M4 screw can be 3D printed with good results.