Biorb Algae Cleaner,, is set to revolutionize aquarium cleaning.
It features:

Better cleaning results - unique blade design removes algae in sheets rather than in a cloud allowing easier removal and is tough enough to remove the most stubborn algae, even coralline algae.

Easy to use and less damaging - Hi tech polymer blades clean without scratching and prevents grit getting stuck in cleaning surfaces, and if the magnetic coupling is released it floats!

Simply dust the outer surface with a soft cloth to remove any grit and then move the out section of the cleaner, the internal section will follow cleaning algae off the inside of the aquarium - no more wet hands!

One product fits all:

Unlike traditional cleaners this bladed design works equally well on flat sided or spherical aquariums made of plastic and glass