Brown scrub pads are slightly more aggressive and recommended for glass tanks. Replacement algae Brown Scrub Pad A 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.