Nobody's pH is anything exact. Everyone's pH fluctuates daily. Your's may be just a snapshot of a moment during the day. I would trust your calibrated probes much more than most other tests. Your measurement is a bit low, likely a morning test.
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436
Last edited by untamed; 12-05-2010 at 03:25 AM.
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