River Stones and GH / KH
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River Stones and GH / KH

This is a discussion on River Stones and GH / KH within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> I just added about fourteen medium sized river stones to my 20-gal tank. I don't know precisely what types of stone they are. Bought ...

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River Stones and GH / KH
Old 02-15-2014, 09:56 PM   #1
 
Question River Stones and GH / KH

I just added about fourteen medium sized river stones to my 20-gal tank. I don't know precisely what types of stone they are. Bought them at my LFS. They were packaged and labeled as river stones for ponds and planters. They appear tumbled... rounded and very smooth. I doused them with white vinegar... no fizz at all. I disinfected them by placing them in a colander and pouring boiling water over them (twice).

I'm planning to test my pH tomorrow. I'm wondering if I should test hardness as well (I'll have to buy the appropriate test kit).

Until now, my pH has been a very stable 7.3 to 7.4. The city's tap water quality report for 2013 says my water at their treatment facility averages 9.5 dGH and 3.9 dKH. I have not measured hardness at home.

Can I expect these so-called river stones to change these parameters? How much change would be considered problematic for Red Phantom Tetras and Zebra Danios?
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Old 02-16-2014, 08:46 AM   #2
 
I don't suspect they will change anything. It will take longer than a couple days to know for certain though. Test in a week. Even still, I wouldn't worry. Even limestone can only alter your parameters so much. I believe the cutoff for limestone is a pH of 8.2 if I'm not mistaken.

Just so you know I have red phantoms in 8.4pH 14-16 kh/gh.
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Old 02-16-2014, 08:56 AM   #3
 
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i agree,i doubt very much they will make a difference at all.
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