vinegar thingy... - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 4 Old 06-13-2010, 10:54 PM Thread Starter
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vinegar thingy...

hi, so i have heard of the thing when you pour some vinegar on like a rock for example to test something, but please help remind me what that tells you as i used to know it but it has left my mind....

sorry kind of a newby question but thank is given to all help provided.
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post #2 of 4 Old 06-13-2010, 11:34 PM
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I believe its to test alkalinity(calcium?) content as the vinegar is an acid, it will react with any bases in the rock, alkalinity in the rock will probably raise the ph of your water. Will let someone else chime in and confirm or correct my answer.
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post #3 of 4 Old 06-14-2010, 04:05 AM
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It is to test whether the rock will influence Ph or not.... If the vinegar fizzes then the rock has basic elements in it. The problem is that if it doesn't fizz, that's not a guarantee that it won't...

Some rocks are safe and easily identifiable, post a pic and maybe we'll know what it is. If I find some good clean slate or lava rock outside, I sometimes use it.
If I'm not sure what it is, I don't.

Plus besides ph, you have to worry about heavy metals in the rock...

Originally Posted by Christople View Post
^^ genius

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post #4 of 4 Old 06-14-2010, 01:33 PM
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The problem with vinegar is that it is a relatively weak acid--after all, you can consume it. A better acid is the Regent #2 in the nitrate test kit; a couple drops will work, if it fizzes the rock is calcareous and will raise hardness and pH to some degree depending upon the rock, how much, and the tank.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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