- B-W6.35H50.8L24.5-N45 Neodymium Magnet, 24.5x6.35x50.8mm Block Magnet
- MM-D-48 Metric Mounting Magnets
- D48DIA Neodymium Magnets, 1/4 inch dia. x 1/2 inch thick
- RE22CS-P Neodymium Magnets, 7/8 inch od x 1/8 inch thick with countersunk hole for #8 screw
- B864 Neodymium Magnets, 1/2 inch x 3/8 inch x 1/4 inch thick
- DBX0 Neodymium Magnets, 11/16 inch dia. x 1 inch thick
- BX8X89 Neodymium Magnets, 1 1/2 inch x 1 1/2 inch x 9/16 inch thick
- B862 Neodymium Magnets, 1/2 inch x 3/8 inch x 1/8 inch thick
- DF3 Neodymium Magnets, 15/16 inch dia. x 3/16 inch thick
- DXCC Neodymium Magnets, 1 3/4 inch dia. x 3/4 inch thick
- D-D10H2-N50 Neodymium Magnet, 10x2mm Disc Magnet
- B-W5H5L15-N45 Neodymium Magnet, 15x5x5mm Block Magnet
- R822 Neodymium Magnets, 1/2 inch od x 1/8 inch id x 1/8 inch thick
- DX8X8 Neodymium Magnets, 1 1/2 inch dia. x 1 1/2 inch thick
- B60x20x5mm Neodymium Magnet, 60 x 20 x 5mm Block Magnet
- DC6PC-RED Plastic Coated Neodymium Magnets
Ceramic Magnets Reef Safe
ceramic magnets reef safe
The aquarium safe magnets will work on glass or acrylic up to 3/8" thick.
Reef Rax Frag Racks mount to your aquariums glass or acrylic with their strong reef safe magnets that can be placed almost anywhere in your tank. Dimensions - 5" L x 3" W x 2.65" H
Neodymium magnets are used in aquariums for their ability to attract to one another through aquarium walls, without requiring a hole in the wall. Here are some of the answers to the questions we most commonly receive about using powerful magnets in an aquarium.
Most setups consist of two magnets attracting towards one another, with one inside the tank walls and one on the outside. We’ll consider this setup for most of the discussion below.
Will magnets work underwater?
Yes, magnets attract to one another underwater. The biggest concern with using neodymium magnets underwater is corrosion. In the presence of moisture, neodymium magnets can rust about as fast as a piece of raw iron. While the nickel plating does slow this down, the nickel eventually loses the battle.
Do not put unprotected magnets into your aquarium! Corroding, rusting magnets may harm aquatic life.
The best strategy is to seal off the magnet somehow from the water. While some of our customers seal off our magnets themselves, either potting them in place or encasing them within their own assembly, our Plastic Coated Magnets are a great off-the-shelf solution.
Plastic Coated Magnets have a layer of injection-molded plastic that surrounds them, providing a waterproof seal. Most of these magnets use a 1/32” thick layer of polypropylene plastic.
Do not use our Rubber Coated Magnets underwater. The natural rubber can have tiny pinholes and may deteriorate over time.
What size magnet do I need?
Disclaimer: What size magnet you need really depends on how you use the magnets. The remainder of this article are some good suggestions and guidelines, but you will really have to try it out yourself to see what works in your exact application. Sometimes differences in how you use a magnet can have a big effect on their performance.
There are 2 important factors to consider: How much strength is required? How thick are the walls of the aquarium?
For most applications, we find that a magnet pull force of 1-3 lb is about right. At least, that’s true for the aquarium wall cleaners and coral frag holders we’ve worked with.
The key to choosing the right magnets is knowing the wall thickness the magnets reach through. The farther apart a pair of magnets is from one another, the weaker the force between them. Magnets that work great on a small 10-20 gallon tank with 1/8” walls will be much too weak for a bigger tank with ½” thick walls.
To help narrow down your search, we’ve compiled a list of plastic-coated magnets, arranged by strength. In the table below, you can see which magnets might be best for various wall thicknesses.
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How to choose and buy a strong neodymium magnet? ALBMagnets is a professional company for strong magnet design and manufacturing,
providing you with reliable N35, N38, N42, N52, N42SH and other grade super neodymium magnets and SmCo rare earth magnets.