The API ALGAE PAD is a sturdy, long-lasting pad which gives you hand-held control to reach in and clean the algae from nooks and crannies of your acrylic aquarium. Product scrapes and removes algae quickly and easily, and may be used as frequently as needed. Size 1 scraper

Do not use on dry surfaces. Rinse pad with tap water before and after use. Not for use on glass aquariums.