The Planted Tank Forum - View Single Post - Good way to test for low PH
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post #5 of (permalink) Old 01-04-2013, 08:48 PM
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Do this. And after constantly paying for solution to calibrate a pen before every use, you'll have spent more time and money than it's worth.

If you're super-concerned about pH? A monitor is the way to go.

Though - if your critters are fine? I wouldn't worry much about it. Just focus on hardness and TDS.

Originally Posted by sbarbee54 View Post
Get a 80$ monitor one, the pens are really finnicky
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