Cleaner-Mag Duplex

Vertex Cleaner Mag Duplex – up to 8mm. The Vertex Cleaner Mag Duplex is a magnetic cleaner designed for small/medium aquariums. The Vertex Cleaner Mag Duplex is a magnetic cleaner designed for small/medium aquariums. The outside-aquarium part has a unique round design made of clear acrylic around the magnet (including a small laser-etched Vertex fish logo). One side of the exterior is covered with white satin fabric. The inside-aquarium part is square in shape and is covered with a coarse white fabric for scraping algae.