This special pad includes a plastic scraper that removes coralline algae in glass or acrylic tanks. Dozer Pad (A) fits the inner magnet for Mighty Magnet models F-1, F-2, and F-3.

Dimensions 3-1/4″ x  4-1/2″. Actual product and color may differ from picture. 

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