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Old 10-01-2010, 04:22 PM   #1
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Can you name this SUBSTRATE?

what is the name of this stuff?

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Old 10-03-2010, 09:04 PM   #2
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no one knows about this tumbled rock, or tumbled vegatative medium?
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Old 10-03-2010, 09:17 PM   #3
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Sorry, no clue
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Old 10-04-2010, 05:52 AM   #4
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Aside from a few shells in there, I have no clue what the round stuff is either.
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Old 10-04-2010, 07:09 AM   #5
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It looks like tiny pea gravel to me
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Old 10-09-2010, 03:56 PM   #6
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I dont think it is a rock, the density seems lowers than that of rock. It seems more like a silicate - vermiculite kind of feel, but denser than water.
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Old 10-09-2010, 04:15 PM   #7
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Put it in water and see if it disolves! Looks like Osmocote fertilizer.
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Old 10-09-2010, 04:49 PM   #8
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It has been in a tank for a few months, not water soluable.

It also looks a a carbon filtration medium Ive seen before - but that was totally grey (this has a natural looking variety of color.)
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Old 10-09-2010, 05:22 PM   #9
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If you want to use it, take a reading of your water before you put the substrate in and then a week later take anothr reading. I it is the same then it is safe to use in a freshwater setup.
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Old 10-09-2010, 05:41 PM   #10
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Oh sorry I did not clarify, you have brought something to my attention. I have about 1 pound of this substrate in my 20 gal tank (brackish). The water quality is excellent. I am not asking about the functionality of this substrate - I only want to know its name. (I got it from an experienced aquarist)
I would like to have about another .5 pound to thicken the substrate layer and give the tank a fuller look.
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Old 10-09-2010, 06:28 PM   #11
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Where did he/she get it?
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Old 10-09-2010, 06:54 PM   #12
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they bought it years ago from a LFS that went out of biz, and they dont remember who owned it or what the name of the substrate is.
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Old 10-09-2010, 08:37 PM   #13
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Well I just went looking through the pictures of all the specialty substrates sold by Seachem and CaribSea, and couldn't find a match at either site. There were quite a few that looked somewhat similar, especially the "Special Grade Reef Sand" sold by CaribSea (under the "Dry Aragonite" category of substrates) but yours looks to be much more uniformly round than the CaribSea stuff.

No idea.
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Old 10-09-2010, 10:42 PM   #14
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i want some dip n' dots yum. haha
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Old 10-10-2010, 02:49 PM   #15
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Quote:
Originally Posted by jeremyblevins View Post
i want some dip n' dots yum. haha
LOL!
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Old 10-11-2010, 01:36 AM   #16
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Its a sand of some type, for sure.
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Old 10-11-2010, 02:12 AM   #17
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looks like pacific ocean gravel to me that is what it looks like and the way your are explaining it
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Old 10-11-2010, 10:43 AM   #18
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Does anybody sell tumbled gravel? Its possible that someone with a rock tumbler bought some pacific ocean gravel then polished it into little spheres.
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Old 10-31-2010, 04:42 PM   #19
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Do you think it is a custom substrate?
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