This high tech magnet cleaner is without doubt the best algae cleaning tool it is so easy to use, and makes cleaning the glass  without having scars on glass.

The  magnet cleaner can help with routine maintenance as well as deeper cleaning. They’re also really convenient and easy to use. Clean algae and scum off of the inside of your aquarium the easly
Strong magnetic forces cause the inside cleaning brush to follow the outside handle. Just wipe the outside, and the inside is cleaned. The inside piece floats, so if it becomes separated from the outside piece, it’s easy to retrieve. Simply drag the no-scratch, felt-lined handle and inside your aquarium, the scrubber follows, cleaning as it goes