01/07/2008, 01:15 PM
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Humble Reefkeeper
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Join Date: Apr 2000
Location: Wakefield, MA, USA
Posts: 1,565
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Here's another option, seems cheap enough to buy a few and check it out:
http://www.discovertesting.com/produ...st%20Strips%20(3%20in%201)%20Spa%20Check
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