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hquintanilla

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I´m trying to make Aragocrete Rocks, wondering a way to make them the more porous. I run to some wax pelets that my sister uses to make candles. So I make some samples adding this pelets to aragocrete. I´ll be waiting to the sample to cure and then I´ll give them a boiling bath to dissolve the wax. But I´m almost sure I ´ll not get all the wax out. So then, I don´t know if this will be safe (not toxic).
Regards...
 

Jeff Hood

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I would think wax would be non toxic but have you considered using something that would disolve or rot out. I have heard of some using spagetti to do what you are doing.

May also provide food for growing bacteria and worms in the rock.


Just a thought to get you thinking.

Jeff
 

Marcosreef

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Have you tried pasta? Elbow Macaroni, Ziti, you name your favorite pasta. Pour some sauce in the tank and have the whole family over!
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danmhippo

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Hmm, how about using those rock sugar, or large grained sugar/salt, add them at the last stage of mixing. Would adding them at the last stage enough to melt them? I don't know for sure, never tried that. Just be sure to cure the rock in freshwater for a couple of days before using it.
 

hquintanilla

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I´ve read about adding pasta, and a common denominator in that approach is the difficulty to remove the pasta.
Will the curing process should last 6 weeks...if you want to be sure not to cause a desaster. You have to monitor the PH of the water which is used to cure the aragocrete, you should change daily the water, and run a power head in the container where you are curing the aragocrete. The first day you´ll get Ph reading of 10+, you have lower the PH over some weeks.
You´ll wonder why suffer to much...but is Ecologicaly polite, and you´ll not get the bad stuff that comes with life rock, you´ll not get the good stuff also...but I´ve heard that with some patience you´ll achive almost the same...
 

StirCrazy

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If you arre going to try wax I would get pure bees wax and shave it into you mix.. then at leat you know it is all natural.

Steve
 

polyp

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I'd go for a refined paraffin wax as it should be pretty much chemically inert. I don't think I'd use bees wax - it's likely got any number of compounds in it depending on the bees, thier behavior and environment.
 

polyp

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<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr> I´ve read about adding pasta, and a common denominator in that approach is the difficulty to remove the pasta.
Will the curing process should last 6 weeks... <hr></blockquote>

What about cooking the pasta first and then soaking it in a soup of amylase before mixing the pasta in with the aragocrete? Amylase is a digestive enzyme which will break down complex carbohydrates into simple sugars (which bacteria can then quickly metabolize). I was thinking you could purchase an amylase digestive aid supplement from a health food supplier and then dissolve the capsules in a tub of water which has been adjusted to the proper pH and temperature for the enzyme to function at its optima (it would be important to do this first as the high pH of your cement would likely halt the enzymatic function)

-oh wait, or you could mix in the pasta dry, let the aragocrete harden. Then do a first bath, wait unitl the pH drops to a reasonable level and then soak the rocks in a second amylase bath (again, correct pH and temp). After they've soaked for a good while the starch should be completely hydrolyzed and you could then quickly 'cure' the remaining sugars out with naturaly occuring bacteria in a third bath.

If you can't find any amylase, you could alternatively suck on each macaroni for about an hour and then put it aside 'till you've "processed" them all (saliva is loaded with amylase and is used in the first stage of digestion!) -Ok, just being a smartass, but you get the idea...
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Then again, maybe this would all be a real pain in the neck?

[ April 10, 2002: Message edited by: polyp ]</p>
 

Mouse

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I like the Rock salt and the sugar cube ideas. I think they would work well. Not too sure about the ice though, i wonder if the rock would have enough time to harden before the ice melted.
 

hquintanilla

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Sorry Guys the wax didn´t work at all...
I´m scraping my brains out...this aragocrete idea is getting personal
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The enzyme idea sounds good...
As far now...the best rock I could get is mixing
1 part sugar sized argonite
2 parts reef floor
2 parts florida crushed coral
2 parts acrylic scraps (my hand hurts of making thousands of holds in acrylic to get them)
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1-1/2 parts whit cement
water...the needesd to make a mixture with body
I´ll just keep trying...
What the hell...I´ll spend 700 hundreds bucks on live rock
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...But I´ll not leave this matter die!!!
 
A

Anonymous

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Another person I know used styrofoam shipping peanuts. They seemed to work pretty well.
 

danmhippo

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How would someone extract the foam out of the aragocrete afterwards? If it simply stays in, what's the purpose of using the foam beads? Just to reduce the weight?
 

monkeyboy

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<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Righty:
<strong>What about using chipped ice?

RR
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</strong><hr></blockquote>

Why not righty's suggestion? Not familliar with making aragocrete, if the mix doesn't heat up at all then the ice should be just enough to give nice porosity.
 

Ben1

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What about using straws like coffee straws cut up or larger straws, or using straws as the argocrete dries to blow bubbles into the rock so it hardens with air bubbles in it? Just some ideas.
 

pitbull

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Never made rock myself, but how about using bio balls or othewr plastic filter media?

Would they be ok? You could also cut them into smaller bits!
 

Bobzarry

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I have heard of using styrofoam and after the rock is cured and dry, soak it in something like gasoline. It then must be soaked in something like lye to break up the petroleum bond(not sure of this---perhaps the chemist here can chime in?) afterwards a good soaking for a few days to clean out any residue. Alternatively I would think you should be able to just put the rock in an oven and melt the foam. Any foam left behind should be inert.

Also muriatic acid will creat lots of micro pores in concrete
Hope this helps
Bob

[ April 11, 2002: Message edited by: Bobzarry ]</p>
 

Jawbone

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When we pour concrete and want the finish to be riddled with holes we throw rock salt on top once its about set up and broom it in. Then we just leave it alone and the salt dissolves naturally at first rain
 

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