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Discussion Starter · #1 ·
Im wondering if there is a way to calculate these and TDS from my city water report? as I dont have test kit for them, If there is a way someone knows, I can post a pic of the city report, thanks
 

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just get a TDS meter. they are cheap and really useful.
 

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TDS will be drastically different in your aquarium so don't bother using the report for that.

For KH divide total alkalinity by 17.86. For GH divide total Calcium and Magnesium by the same, 17.86.

In your case 148 / 17.86 = 8.2 dKH

I didn't see any magnesium listed, only calcium. Based ONLY on calcium your gh would be 3, (53.8 / 17.86 = 3.012). In reality it would be somewhat higher including the magnesium.
 
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