Vinegar test for Rocks for tank ever hear of it? Ever tried it? - Betta Fish and Betta Fish Care
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post #1 of 8 (permalink) Old 07-12-2013, 09:52 AM Thread Starter
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Vinegar test for Rocks for tank ever hear of it? Ever tried it?

I have a nice short book on aquascaping I found cheap on Amazon it's been out for awhile it's called "Creating a Natural Aquarium". It's a good beginners book.

They mention to be sure a rock is safe for an aquarium and won't raise PH or change water hardness to put a few drops of vinegar on the rock if it fizzes it's fine if not it's alkaline and could change your parameters. I have rocks I've collected from creeks around my area that are sitting on the side of my house. Many have fossils imbedded in them.

Have you tried this test? How else can I determine if rocks are ok to use in my aquarium? FYI I've always gardened organically so no chemicals should be present on them. My neighbors on the side of the house they have been sitting don't spray either.

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post #2 of 8 (permalink) Old 07-12-2013, 10:38 AM
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I think you have it backward--if it fizzes, you shouldn't use it.
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post #3 of 8 (permalink) Old 07-12-2013, 11:20 AM
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yes if it fizzes do not use it, i usually get a gallon vinegar and put it in a bucket and drop the rock in to check them to be sure lol
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post #4 of 8 (permalink) Old 07-12-2013, 02:15 PM Thread Starter
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Stone do you get a volcanic eruption once you drop the rock in? : D

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post #5 of 8 (permalink) Old 07-13-2013, 02:52 AM
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Good to know. I have some cool rocks in my yard so I will try this out in the morning and see what happens.

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post #6 of 8 (permalink) Old 07-14-2013, 02:31 PM
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If it fizzes it means it's got calcium carbonate in the rock. This usually occurs with various types of Limestone. It's not BAD per se but it will generally leech into your water and mess with the chemistry at an undefined rate.

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post #7 of 8 (permalink) Old 07-14-2013, 02:36 PM
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Just know your rocks. Volcanit rocks like Granit, slate, quarts, are all good to use no need to test.

sedimentary rock stay away from lime stone being the big no no.

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post #8 of 8 (permalink) Old 07-14-2013, 02:43 PM
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+1 on bahamut285's comments.

Calcium carbonate is the active ingredient in "Tums." It will likely raise the pH in your tank. This, in turn, may raise the ammonia level. (At low pH, there is more ammonium present. This is OK. At higher pH, there is more ammonia present. This isn't OK.)
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