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-   -   Can you name this SUBSTRATE? (http://www.aquariumadvice.com/forums/f60/can-you-name-this-substrate-134784.html)

alexgcali 10-01-2010 04:22 PM

Can you name this SUBSTRATE?
 
1 Attachment(s)
what is the name of this stuff?

see attachment

alexgcali 10-03-2010 09:04 PM

no one knows about this tumbled rock, or tumbled vegatative medium?

neilanh 10-03-2010 09:17 PM

Sorry, no clue

ryshark 10-04-2010 05:52 AM

Aside from a few shells in there, I have no clue what the round stuff is either.

mfdrookie516 10-04-2010 07:09 AM

It looks like tiny pea gravel to me

alexgcali 10-09-2010 03:56 PM

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.

thincat 10-09-2010 04:15 PM

Put it in water and see if it disolves! Looks like Osmocote fertilizer.

alexgcali 10-09-2010 04:49 PM

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.)

thincat 10-09-2010 05:22 PM

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.

alexgcali 10-09-2010 05:41 PM

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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