Is this seiryu stone? - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 08-02-2013, 06:50 PM Thread Starter
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Is this seiryu stone?

I ordered some of this for cheap. It looks like seiryu, but it looks like it was in a reef tank or something because there seems to be ca+ precip on the rocks.

The rocks at the bottom are simple slate. Ignore them
Attachment 184865

Here are some other rocks.
Attachment 184873
Attachment 184881

What do you guys think?

Last edited by Positron; 02-25-2014 at 04:51 AM.
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post #2 of 11 (permalink) Old 08-02-2013, 07:06 PM
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I don't think so,
unless it has an ADA sticker.

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post #3 of 11 (permalink) Old 08-02-2013, 07:30 PM
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You should test it with acid, check for bubbling/foaming which indicates that its limestone based and could alter your tank kH

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post #4 of 11 (permalink) Old 08-03-2013, 12:19 AM
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I don't think so,
unless it has an ADA sticker.

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Hehe.

Nice stones though.
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post #5 of 11 (permalink) Old 08-03-2013, 02:04 AM Thread Starter
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I bought a gallon of vinegar. Poured it in a 3 gallon bucket with the stones. Fizzed like all heck. Bummer

I'm going to check the pH of the solution after the vinegar is neutralized.
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post #6 of 11 (permalink) Old 08-08-2013, 06:02 AM
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If it fizzed like the heck with vinegar, it would be foam city with muriatic acid. I don't use vinegar anymore due to fact that its a much weaker acid than muriatic acid. Its fairly cheap too and you can get it from hardware stores or a pool supply.

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post #7 of 11 (permalink) Old 08-08-2013, 06:12 AM
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Looks similar. FYI seiryu is not inert

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post #8 of 11 (permalink) Old 08-08-2013, 02:39 PM
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You should test it with acid, check for bubbling/foaming which indicates that its limestone based and could alter your tank kH
Seiryu would fail this test as it is carbonate based. I, and many others, have seiryu and seiryu type rocks for our aquascapes with no ill effects. For the OP -- rock looks good, does not need an ADA sticker to be put into your tank.


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post #9 of 11 (permalink) Old 08-08-2013, 02:45 PM
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I never said he can't use it... I use Seiryu rocks in my tanks as well; kH rises quite a bit with higher level of CO2, but regular water changes negate this effect. Others have complained that certain seiryu type rocks raise kH above 10 and becomes troublesome for sensitive plants, so one should plan ahead, especially since hardscapes can be very troublesome to change once plants/slopes etc are set.

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post #10 of 11 (permalink) Old 08-08-2013, 02:57 PM
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Hi Positron,

Seiryu stone is a limestone rock from the Seiryu district of Japan. To the best of my knowledge this stone has not been exported from Japan for several years. Most of the stone we see sold as 'Seiryu stone' today is Ming stone from SE Mainland China. It is also a weathered dolomite (carbonate) stone as was Seiryu stone. As others have stated neither stone is inert.

Ming stone


Ming stone is 45 gallon tall

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75 Gallon, 2X55W AH Supply CF 8800K, 1XFluval F&P 2.0; 45 Gallon Tall, 96Watt AH Supply CF 6700K; 30 Gallon Long; Fluval F&P 2.0; 20 Gallon, 1X26W AH Supply LED; all with CO2 and (Calcined) Montmorillonite Clay
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post #11 of 11 (permalink) Old 08-10-2013, 04:35 AM
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If it hasn't been eported from Japan in years, people are getting it from somewhere. Or perhaps there a stockpile elsewhere. ADA gets it along with other japan stones from somewhere. There is also a guy that is selling it on [Ebay Link Removed] Great selection but too expensive for my wallet. The Ming stone doesn't look like what I have been seeing sold as Seiryu Stone though.

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