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post #1 of 10 (permalink) Old 03-24-2008, 03:16 AM Thread Starter
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artificial rocks

has anybody seen anything comprehensive on building artificial rocks with latex mold + mortar (or other material) cast?

i have reviewed the article by the Finnish guy, but none of the products he describes are available in the US.
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post #2 of 10 (permalink) Old 03-24-2008, 03:39 AM
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I'd stay away from mortar. It raises PH pretty high..
Although they do make synthetic mortar (tiling).. Not sure what the make up of that though.. It could be some sort of epoxy which could work.


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post #3 of 10 (permalink) Old 03-24-2008, 04:11 AM
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I'm failure with resins and i imagine you could make some really cool molds and cast stuff our of that. also i image if you have aces to clay and some kins you would make some nice stuff out of clay.

the only think i would what with clay would be the make up of it (were it came from and the type red ware or terracotta and the such)

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post #4 of 10 (permalink) Old 03-24-2008, 06:45 AM
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There's something that terrarium/vivarium/reptile keepers use... has a name like "Good stuff" or "great stuff" or something like that... it's a moldable/cuttable synthetic microbead foam product... it's safe underwater though will eventually decompose over time, they use it to build walls (it will float if not anchored)... shoot I wish I could remember what it's called; anyone else?





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post #5 of 10 (permalink) Old 03-24-2008, 06:49 AM
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Quote:
Originally Posted by lauraleellbp View Post
There's something that terrarium/vivarium/reptile keepers use... has a name like "Good stuff" or "great stuff" or something like that... it's a moldable/cuttable synthetic microbead foam product... it's safe underwater though will eventually decompose over time, they use it to build walls (it will float if not anchored)... shoot I wish I could remember what it's called; anyone else?
I'm pretty sure you are talking about Great Stuff.

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post #6 of 10 (permalink) Old 03-24-2008, 06:51 AM
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AHA yeah that!





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post #7 of 10 (permalink) Old 03-26-2008, 02:06 AM
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great stuff is the stuff.


used alot in reef keeping to build walls and attach rocks to one another.. ive used the stuff once, you really need to be talented to get it to look nice..

stuff comes in ether white or black coloring.. so i suggest using sand.. on rubble rock/stone to sprinkle over it to give it a more natural look.
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post #8 of 10 (permalink) Old 03-26-2008, 03:42 AM Thread Starter
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i am more interested in casting with a negative mold.

does anybody have any experience with Quikrete mortars or other products.

http://www.quikrete.com/ProductLines/Products-Home.asp
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post #9 of 10 (permalink) Old 03-26-2008, 05:43 AM
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i used quickrete underwater cement for a background on my cichlid tank.

you have to soak the stuff after it cures for a while cuz it'll leach into the water and raise the pH, mine was like, at 9 when i first filled it up.

i did a water change every day for about a week and now my ph is around 6-7 (the same as my tap) so the cement doesn't do anything to the water.
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post #10 of 10 (permalink) Old 03-26-2008, 05:53 AM
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Good thread on DIY concrete rocks:

http://reefcentral.com/forums/showth...5&pagenumber=1

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