Flipper DeepSee CLEAR Aquarium Viewer, 4in

Flipper DeepSee CLEAR Max Magnified Magnetic Aquarium 4-inch Viewer is an optical-grade magnifying lens with a 4-inch viewing portal that is ideal for aquarium photography, with a focal range of approximately 3 to 8 inches. It is held in place by strong rare earth magnets, making it suitable for use on tanks with up to 5/8" (16mm) wall thickness. The lens easily moves around the tank, allowing for viewing from any location. It is great for checking for early signs of disease or pests on your reef, coral, shrimp, or fish. The DeepSee is designed for all types of tanks - freshwater, saltwater, or dry, and it is safe for both glass and acrylic.