Lifegard Mighty Mag Algae Cleaner for Nano Glass Aquariums @ Fish Tanks Direct
MAG-FLOAT Glass Floating Magnetic Aquarium Cleaner, Small - Chewy.com
F-4 for 1/2″ to 1″ – Mighty Magnet Inc.
Mighty Mag Algae Cleaner for Nano Aquariums - Walmart.com
FF-5 for 5/8″ to 1-1/4″ – Mighty Magnet Inc.
Oregon - Mighty Magnet- F-3 $80 shipped | REEF2REEF Saltwater and Reef Aquarium Forum
New Hampshire - :Mighty Magnet F4 model in original Case with pad, etc for thick tanks. Hard to find these used | REEF2REEF Saltwater and Reef Aquarium Forum