The API Algae Pad is a sturdy, long-lasting pad that gives you hand-held control to reach in and clean the algae from the nooks and crannies of your glass aquarium. Product scrapes and removes algae quickly and easily, and may be used as frequently as needed.

Instructions:

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