This special pad includes a plastic scraper that removes coralline algae in glass or acrylic tanks. Dozer Pad (B) fits the inner magnet for Mighty Magnet models F-4, F-5, F-6, F-7 and FF-3.

Dimensions 4″ x  6″. Actual product and color may differ from picture. 

Always clean, inspect, and test products in an inconspicuous area of the aquarium.