The use of waterproof magnets in aquariums is a common solution, it is mainly used for fixing decorations (such as fixing wigwams, sunken wood, backdrops, etc.), pump or air pump fixing, sensor or probe fixing, cleaning tools (magnetic cleaning brushes), and other scenarios, so what kind of magnets should be used?
Aquarium waterproof magnet material;
Waterproof magnet material for aquarium mainly has ceramic ferrite and rare earth neodymium magnet, for ceramic ferrite, although corrosion resistance is strong, but due to weak magnetism, only suitable for low force application, mainly neodymium material is still the main material, because of corrosion resistance is not good, so it is necessary to avoid contact with water, and the surface is usually coated with epoxy resin, nylon or plastic coating.
Picture below shows the fully encapsulated strong magnetic double-sided magnetic waterproof fish tank magnet

What is the best type of waterproof magnet to use for aquariums?
The most recommended ones are rubber-covered magnets, plastic-covered magnets, Magnet material is mostly neodymium.
Rubber-coated magnets have soft rubber on the outer layer, which won't make the glass scratch, with full waterproof, rustproof, high friction, not easy to slide, suitable for long-term water-soaked environments.
Plastic Coated Magnets shell is hard, not easy to aging, through the integration of injection molding encapsulation, can be very good waterproof and corrosion resistance, can be customized in a variety of shapes and colors.
Above is the aquarium magnet material and recommended introduction, for strong magnetic requirements occasions, such as thick glass tank, you can also consider epoxy coated neodymium magnets, anti-corrosion effect is not as good as the previous 2 kinds, but the magnetic effect will be better.
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