The Planted Tank Forum - View Single Post - Hayden's ADA 45-f: The End
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Old 10-28-2012, 02:14 PM   #124
Obsessed? Maybe
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You fill the bulb of your drop checker maybe 2/3 full of 4dkh solution.

Then add 3-4 drops of low range pH reagent (from your test kit). That'll serve as your pH indicator.
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