What is this rock? - The Planted Tank Forum
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post #1 of 16 (permalink) Old 05-07-2013, 12:37 AM Thread Starter
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What is this rock?

Today, while rock searching, I came across a cool looking rock that is very porous and gritty feeling. I boiled it already, but I want to know what type of rock this is and the potential dangers of it, if any. Any suggestions?

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post #2 of 16 (permalink) Old 05-07-2013, 03:12 AM
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Re: What is this rock?

Looks like you have some black lava rock. What are your concerns? I wouldn't be worried about any sort of toxicity -the most it could do is raise your Ph, but I doubt it will. Its most likely inert.
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post #3 of 16 (permalink) Old 05-07-2013, 03:14 AM
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Re: What is this rock?

Ieither that, or you have asphalt chunks. Ha! Tough for me to see the surface pattern. It looks exactly like my black lava rock, though.
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post #4 of 16 (permalink) Old 05-07-2013, 03:29 AM
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Definitely Black Lava Rock (BLR)


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post #5 of 16 (permalink) Old 05-07-2013, 05:33 AM Thread Starter
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Okay, so its possibly black lava rock, but my concern is will it affect the water in any way, shape, or pattern? Change the parameters? Raiser lower them? I'll try to take a better pic later

Here's the first, second and the third

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post #6 of 16 (permalink) Old 05-07-2013, 11:29 PM
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Yeah, definitely lava rock.

It really shouldn't affect the water quality, it should be inert for all intents and purposes.

However, I have heard some reports of people claiming a pH or hardness spike. I'm fairly sure this is from contaminants or something, but I don't know anything about the specifics to these claims.
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post #7 of 16 (permalink) Old 05-07-2013, 11:50 PM
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What is this rock?

Put it in a cup of RO water. If it changes the chemistry, you know it isn't great for your purposes.

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post #8 of 16 (permalink) Old 05-08-2013, 12:04 AM
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OMG where did you find that? I was looking for super black lava rock for so long!
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post #9 of 16 (permalink) Old 05-08-2013, 12:59 AM Thread Starter
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Quote:
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OMG where did you find that? I was looking for super black lava rock for so long!
Haha my science teacher has a long container full of items she gave them to me :P
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post #10 of 16 (permalink) Old 05-08-2013, 02:09 AM
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Inert. It is actually a glass
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post #11 of 16 (permalink) Old 05-08-2013, 02:13 AM Thread Starter
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Inert. It is actually a glass
What's inert mean? Also, it won't hurt the water chemistry or water parameters by any means?
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post #12 of 16 (permalink) Old 05-08-2013, 02:15 AM
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Quote:
Originally Posted by Shrimpo_Brian View Post
What's inert mean? Also, it won't hurt the water chemistry or water parameters by any means?
inert = nonreactive
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post #13 of 16 (permalink) Old 05-08-2013, 02:26 AM Thread Starter
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inert = nonreactive
So the rocks won't mess with the water chemistry?
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post #14 of 16 (permalink) Old 05-08-2013, 02:30 AM
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So the rocks won't mess with the water chemistry?
They "shouldn't". But to be safe you could put it in some RO water as suggested above and test it several times over several days to see if any changes come about. I just got one also, at petsmart. I'm soaking mine to "clean" it. I'll probably test the water a few times over the next few days to be sure it's safe.
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post #15 of 16 (permalink) Old 05-08-2013, 02:45 AM Thread Starter
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Okay, I just put the rocks in there.....let me just hope that it "won't" mess my water chemistry.
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