Lee’s Coarse Scrubber Pad (Glass) – A coarse-texture aquarium cleaning pad specifically made for glass tanks. This pad aggressively removes tough algae, hard water stains, and film without scratching the glass surface. Use it by hand or with a handle to scrub walls and corners. It’s a reusable, effective tool to keep your aquarium glass crystal clear – perfect for periodic deep-cleaning of stubborn algae buildup.