Tahitian Moon Sand......? - The Planted Tank Forum
 
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post #1 of 13 (permalink) Old 11-07-2006, 08:06 PM Thread Starter
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Tahitian Moon Sand......?

Anybody know if the Tahitian Moon Sand actually effects PH, GH, KH in any way? It says it doesn't, but Lots of products say that.....

Anybody know from Experience?

TIA


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Last edited by Naja002; 11-08-2006 at 12:51 PM.
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post #2 of 13 (permalink) Old 11-07-2006, 09:37 PM
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its crushed onyx so no should not effect your water in any way. Onyx is inert.


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post #3 of 13 (permalink) Old 11-07-2006, 09:57 PM
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Tahitian moon sand is not crushed onyx. Tahitian moon sand is inert where as onyx is not. Onyx raises hardness in the water.


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post #4 of 13 (permalink) Old 11-07-2006, 10:42 PM
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I have it and haven't seen any differences and I love the way it is. I have it mixed in with my eco-complete now as a filler (since I already had it) and it works great, settles immediately too.


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post #5 of 13 (permalink) Old 11-07-2006, 11:36 PM
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Quote:
Originally Posted by ianiwane View Post
Tahitian moon sand is not crushed onyx. Tahitian moon sand is inert where as onyx is not. Onyx raises hardness in the water.
humm.. I had read a listing of diff rock types and it has onyx listed as inert.
trying to find that listing. then again maybe my LFS was just trying to pass crushed onyx as TMS.


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post #6 of 13 (permalink) Old 11-08-2006, 12:18 AM
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I use it for exactly the fact that it doesn't affect water parameters. I like the look of it and it works great in my shrimp tanks that I need to keep pH low...no buffering.

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post #7 of 13 (permalink) Old 11-08-2006, 01:26 AM
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Tahitian Moon sand is inert.

There may be a little confusion here because Seachem markets a product called Onzx Sand and it contains carbonates. Onyx Sand

Seachem also markets a product called Gray Coast Calcite. This is exactly the same product as Onyz Sand. The only difference is the bag and the amount of substrate that is included. Onzx Sand comes in 7 kg bags and Gray Coast Calcite comes in 10 kg bags. Gray Coast
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post #8 of 13 (permalink) Old 11-08-2006, 03:12 AM
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Quote:
Originally Posted by Blacksunshine View Post
humm.. I had read a listing of diff rock types and it has onyx listed as inert.
trying to find that listing. then again maybe my LFS was just trying to pass crushed onyx as TMS.
Onyx is deff. not inert. It will raise hardness, I am 100 percent sure on this.


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post #9 of 13 (permalink) Old 11-08-2006, 04:21 AM
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There are more than one material refered to as onyx.

Onyx is silicone oxide (SiO2) or a microcrystalline form of quartz which is inert.

The other Onyx is the Seachem substrate which is not inert.

Here's a good article about onyx: Re: Dark Substrate

Here's some quotes from the fins.actwin.com article listed above:

"Onyx is pretty inert - about as active as diamonds."

"The mineral onyx (a form of quartz) is chemically inert as all get out."

"The substrate material marketed under the trade name "Onyx"...may contain significant amounts of Ca and Mg plus their carbonates, which can change your water hardness a lot."
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post #10 of 13 (permalink) Old 11-08-2006, 05:34 AM Thread Starter
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Quote:
Onyx Sandô is not chemically coated or treated but does have a slight buffering capacity that may raise pH by 0.1 - 0.5 pH units (depending on source water characteristics).
Seachem Onyx


Thanx Everybody! I just bought 2 more baby A. javanicus' and I am going to use the Tahitian Moon Sand for the Substrate, but I needed to make sure it was inert because I need an acidic PH. The only plant at this point will be Hornwort since its low-light and floats, so I don't have to worry about trying to keep it rooted.

Many Thanx!


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Last edited by Naja002; 11-08-2006 at 01:02 PM.
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post #11 of 13 (permalink) Old 11-11-2006, 04:12 PM
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I think I will Be putting Flourite under Tahitian Moon Sand Once i decide to fully plant the 10 gallon with the Tetras.
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post #12 of 13 (permalink) Old 11-11-2006, 04:46 PM
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You may not like the results that you get from the Flourite/Tahitian Moon combo. What happens over time is that the small particles settle to the bottom and the larger particles are usually on the top. It make look bad after a while. Eco-Complete may be a better choice because it is black like the Tahitian Moon.
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post #13 of 13 (permalink) Old 11-11-2006, 05:35 PM
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ok thanks i will go with 100% flourite
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