Rocks from LA beach - The Planted Tank Forum
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post #1 of 2 (permalink) Old 09-02-2018, 03:33 PM Thread Starter
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Rocks from LA beach

I went to palos verdes be ach yesterday and there were lots of rocks there. Some of them black rocks just like the ones I bought from my local shop. Is it ok to wash them and maybe soak them in water for a few days before I put them in my planted tank? Do you guys recommend or not a good idea. Thanks
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post #2 of 2 (permalink) Old 09-06-2018, 03:31 PM
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Probably OK. The typical test is by pulling very negar on the rock surface and looking for bubbles. I use muriatic acid instead, since less is needed, the bubbles are way more pronounced (much stronger acid), and it is cheaper than vinegar. Bubbles mean the rock would dissolve some in the water to raise the pH. Sometimes that’s OK, but perhaps whatever else is in the rock could cause issues, too.

If no bubbles, let it rinse for a while, hot water bath, etc. then go for it.


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