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#1
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![]() my tang broke mine and it had no ill effects
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#2
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![]() The balls are magnetic.. My guess it they're iron.. I dont think that would be a problem for your tank. Magnetic metals are iron, nickel, cobalt, gadolinium, neodymium and samarium (I googled it!), Nickel and the others are more expensive. Call it inadvertent iron dosing.
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