agate rock safe? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 01-30-2014, 02:49 AM Thread Starter
Ras
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agate rock safe?

from what I can make of it most agate is made from Chalcedony which is a form of silicon dioxide, same as quartz only difference is according to wiki

its about twice as soluble?
so what does this mean exactly because I'm no scientist.
does this means it is leaches more silicates into the water or? what
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post #2 of 4 (permalink) Old 01-30-2014, 03:01 AM
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Agates are usually considered safe for aquariums.They may be more soluble than quartz, but they still aren't that soluble. I've had some lovely large agate in my aquariums for over 30 years.

2 2.5s, 3 10s, 2 20s, 1 29. Low light, low tech. Ponds
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post #3 of 4 (permalink) Old 01-30-2014, 03:13 AM
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agate is perfectly fine in a tank. its no different then petrified wood or anything similar. you might want to do a reactivity test just to be sure though.
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post #4 of 4 (permalink) Old 01-30-2014, 10:08 PM
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I don't know, those numbers seem a bit high, but it's been quite a while since I've read anything on mineral solubility. Also, the section of the wiki with that chart has a couple 'citation needed' bits, so...

Anyways, yeah, agate is fine. For our intents and purposes, it's effectively inert/insoluble. Agate, chalcedony, quartz, flint, chert, etc., is all pretty much SiO2, and is perfectly safe.
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