Seachem Laboratories Algae Scraper Size:12" The bleach will literally “burn

The bleach will literally “burn off” the organics that have been removed from the tank

and Non-Toxic

A high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste

Provides phytoplankton ranging in size to feed a broad range of tropical marine filter feeders and invertebrates

Easily removes tough algae in glass aquariums

Seachem Laboratories Algae Scraper Size:12" The bleach will literally “burnThe Seachem Algae Scraper is designed with versatility in mind. With three retractable blades: metal, plastic, and soft pad, it is suited for both glass and acrylic aquariums. It is lightweight and features an ergonomic handle making it comfortable to hold in multiple positions. In addition, it floats for easy retrieval. Finally, its white color makes it easy to see the algae you want to remove and when youve effectively removed it. Sizes: 12 inches