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#4
12-09-2009, 06:19 PM
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The new thermometers are not mercury, I believe a alcohol of some sort. I have no idea of the side effects, the small metallic balls in the base, once again I do not know exactly what they are, but i have had a few break in my tank when my regal got angry with them. No ill effects in my tank, of course he didn't eat it though. Sorry i cannot be of more help.
Bob
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