The Planted Tank Forum - View Single Post - I bought a used ph monitor.....
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post #3 of (permalink) Old 11-20-2012, 01:45 PM
Obsessed? Maybe
somewhatshocked's Avatar
Join Date: Aug 2011
Location: Middle America
Posts: 12,841
Since you have it and plan to use it, then try calibrating it.

If it doesn't work, then definitely get a new probe. Ordering from Hong Kong would be the way to go unless you're trying to support a local shop or something.
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