HOB Filter Flow Diffuser

This is a flow diffuser specifically designed for hang-on-back (HOB) filters that reduces the intensity of the waterfall, creating a calmer environment for your fish and plants.

Key Features

• Universal Mounting: Designed to use standard aquarium suction cups (those used for 4-6mm air hoses). This ensures the diffuser stays firmly against the glass regardless of your filter's brand.
• Ideal for Bettas and Planted Aquariums: Breaks surface tension and distributes flow laterally, preventing strong currents that can stress slow-swimming fish or move substrate.
• Easy Cleaning: By using suction cups, you can remove it in seconds to clean algae or biofilm without needing to move the filter.

For this model, you will need:

• Suction Cups: 2x Rubber Aquarium Suction Cup Holders you can find them at your LFS or on Ali.
• Recommended Material: PETG. Avoid PLA long-term as it can degrade or deform with constant humidity.
• Glue the small pyramid with cyanoacrylate to compensate for the distance of the attachment to the glass, you can scale it according to your needs although the standard size works if you use the same suction cup holders