Shale ok for aquarium? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 11-03-2006, 08:14 PM Thread Starter
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Shale ok for aquarium?

I have been using shale in my goldfish tank for a year or two now and have noticed a abnormally high pH, since the source water is neutral (7).

Does anyone know if shale leaches carbonate?


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post #2 of 3 (permalink) Old 11-03-2006, 08:47 PM
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Sedimentary rocks like shale and sandstone generally contain a lot of calcium carbonate. To test your particular piece you can use the old "acid test". Put muric acid or hydrochloric acid on the rock and see if it fizzes. I believe you can buy it online or from a pool supply store. I think Jonathan from CCAC also has some lying around

Just curious, where did you get a neutral pH source in Indiana? I know my tapwater comes out above 8, and RO water is below 7. Do you mix it up yourself?

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post #3 of 3 (permalink) Old 11-09-2006, 05:30 PM Thread Starter
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My superpower is producing pH neutral water.

In reality, my water tests between 7.2-7.8 most all of the time.

So, I rounded down. My the way I live in Westfield, by Mike.
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