The Planted Tank Forum - View Single Post - Do I need a water hardness kit and does the API one work?
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post #2 of (permalink) Old 12-05-2012, 06:08 AM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 10,673
GH is good to know, but you don't really need to test it on a regular basis.

The GH test kit works fine, but can be finicky, especially if the reagent is older.

Some people also find the colour changes (it is a titration test kit) a bit hard to discern.

I wouldn't worry too much about pH. A stable pH is more important than anything. If you are looking for a lower pH for a particular reason (i.e. such as breeding or keeping wild caught fish), then rather than using bottled water (which would become very expensive), RO or DI water would be a cheaper alternative.


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