Bell Outlet

Product Introduction

This is a 3D printed aquarium outlet replacement designed for an 18mm inner diameter. It features a unique duckbill (bell) shaped outlet design, which diffuses the water flow from the filter pump into a wide, gentle curtain, effectively increasing the contact area between water and air. This significantly enhances dissolved oxygen levels in the water while circulating the water body and reducing impact. It's a practical modification accessory for upgrading the outlet effect of small aquarium filter systems.

Design Highlights

1. Duckbill-shaped Aeration Structure: The flattened bell-mouth at the end disperses concentrated water flow, forming a sheet-like water curtain. When it hits the water surface, it draws in more air bubbles, achieving efficient aeration, especially suitable for high-oxygen-demand environments.
2. Precisely Adapted Interface: The inner diameter of the cylindrical inlet interface precisely matches 18mm (approx. 16/22 specification) outer diameter soft tubing, ensuring a tight connection to prevent detachment and leakage.
3. Integrated Curved Flow Path: The optimized bend angle and streamlined inner wall guide the water flow to exit diagonally downwards or horizontally, which can create surface agitation and avoid directly impacting aquarium decorations and livestock.
4. 3D Printing Customization Advantage: Different surface textures can be achieved by adjusting printing parameters. The structure is robust, integrally formed without seams, easy to clean, and supports personalized size adjustments.

Technical Specifications

• Core Specifications: Adaptable to 18mm inner diameter, model outer diameter 17mm
• Main Material: PLA / PETG / ABS (3D printing materials, PETG recommended for long-term underwater use).
• Structural Features: Integrated L-shaped bent tube, with a flattened duckbill opening at the end.
• Main Functions: Water flow diffusion, aeration, force reduction, direction change.

Usage Scenarios

1. Aeration for Small Aquariums/Shrimp Tanks: Provides efficient replenishment of dissolved oxygen to small bodies of water lacking separate aeration equipment, through filtered water outflow.
2. Moderate Filter Water Flow: Used when pump flow is too strong, converting powerful water flow into gentle flow, suitable for keeping small fish, shrimp, or fry.
3. Top/Hang-on-back Filter Modification: Directly replaces the original round outlet, upgrading to a duckbill outlet with aeration function, improving filtration effectiveness.
4. DIY Filter System: Used for the outlet end of self-assembled external canister filters, small tote box filters, and other systems, optimizing the water outflow shape.