You can also just pick-up a small sheet of 1/8th" or slightly larger acryclic, and make a small 'box' for the magnets out of those. Then you could also attach whatever mounts you wanted to the magnets. And, you could make larger ones that have more magnets, etc... But theres also sealing them like everyone else suggested! Just a thought?
Chris
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No more tanks  - Laying off the ReefCrack for awhile!
Cheers,
Chris
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