Suitable for aquariums up to 290 gals or 1325 litres or glass thickness up to 16mm.

No need to scrape off algae with razor blades. This clever design uses two powerful attracting magnets (one inside the tank and one outside).
The inside magnet has a cleaning surface (to remove algae).
Should the inside magnet become detached, it will float to the surface for easy access.
Size: 8cm x 6cm x 6cm.
Not suitable for plastic or acrylic aquariums.