the magna float algea spcraper works well, and you can use it while you are looking into the tank so you can "see" any algea growing on the glass, opposed to having to stand over the tank to scrape with an algea scraper pad.
the algea scraper pads do have their advantages though, for the magnets in the magna float can only apply so much pressure, and if there is some though algea you can go in there and get it.