All Algae Free aquarium cleaning magnets must use acrylic-safe scrubbing pads when cleaning acrylic aquariums. Acrylic-Safe Scrubbing Pads for all Algae Free Cleaners. Each kit includes:(3) 8.5" x 11" acrylic-safe inner scrubbing pads (makes 30 pads for all Algae Free Cleaners).
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