This special pad includes a plastic scraper that removes coralline algae in glass or acrylic tanks. Dozer Pad (C) fits the inner magnet for Mighty Magnet models FF-4, FF-5, FF-6, FF-7, and F-8.

Dimensions 5″ x  7-1/2″. Actual product and color may differ from picture. 

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