The Planted Tank Forum - View Single Post - How to tell TDS without meter
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post #4 of (permalink) Old 04-13-2017, 01:59 AM
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From the sounds of it, tap water is on the soft side already... i.e. possibly around 4 GH and 0 KH, based on old posts.

TDS is being raised with the use of Equilibrium and possibly Baking Soda? *AND* pH Down....

Here's a little something to understand it a bit better....
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