How do I find out if a certain rock is raising my water hardness? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 05-08-2008, 02:04 PM Thread Starter
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How do I find out if a certain rock is raising my water hardness?

Do I drop it in a container of vinegar or something?

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post #2 of 6 (permalink) Old 05-08-2008, 02:19 PM
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i think you put a dab of vinegar on it and if it starts to bubble or foam after awhile then it's leeching minerals into your water.
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post #3 of 6 (permalink) Old 05-08-2008, 06:04 PM
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Or, you could put the rock into a bucket of water, let it sit for (say) a few days, and then test the hardness of the water as well. Though the vinegar method is easier

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post #4 of 6 (permalink) Old 05-09-2008, 01:07 AM
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To be even more conclusive, use muriatic acid. Not all stones will react to the vinegar method. Using acid is the fastest and easiest, IMHO, but I do understand that most folks don't just have it around the house

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post #5 of 6 (permalink) Old 05-10-2008, 10:51 PM Thread Starter
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Is there anything we can coat on the rock (Zebra Rock specifically) to make it lose it's buffering capabilities?

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post #6 of 6 (permalink) Old 05-11-2008, 03:58 AM
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AFAIK zebra rock does not buffer. I tested mine with muriatic acid.

You could coat it silicon...thats all I can think of. And if you are going to put silicon coated rocks in you tank you might as well just poop in it.

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