Seachem Laboratories 3-in-1 Algae Scraper for Glass and Acrylic Aquariums 1ea/6 in
3 in 1 6 inch Algae Scraper for Glass and Acrylic Aquariums- Metal and plastic blades, plus durable and soft pads- Floats for easy retrieval- White color contrasts with algae so you can see what you are removing.