Magnetic Sponge Filter

Suction cups fail.
Magnets don’t.

This magnet-mounted sponge filter holder is designed for aquarists who want a clean setup that actually stays put. Strong epoxy-coated magnets hold your sponge filter exactly where you want it—no slipping, no falling, no re-adjusting every water change.

Each holder is 3D printed in PETG, making it tough, water-resistant, and built for long-term aquarium use.

Why We Made This
We got tired of suction cups peeling off glass and dumping filters into the substrate. This holder keeps your sponge filter locked in place while keeping your tank looking clean and intentional.

Features
🧲 Magnet Mounted – No suction cups to fail
🐟 Aquarium Safe – Epoxy-coated magnets resist corrosion
💪 Strong Hold – Designed for aquariums up to 1/4" glass thickness (most tanks up to 40B and 55 gallons)
🧱 3D Printed PETG – Durable, water-resistant plastic
🧼 Clean Look – Keeps sponge filters positioned and tidy

Compatibility
🐟Freshwater aquariums
🦐Shrimp tanks
🐟Betta tanks
🐟Fry & grow-out tanks
💧Axolotl Tanks
🐟Nano and standard aquariums (up to 1/4" glass)

Important Notes
🔷Airline not included
🔷Requires an air pump—using a check valve is highly recommended

🧲Magnets are strong—slide to separate or attach, do not pull straight apart

Designed by aquarists.
Printed in-house.
Built to solve a problem.