Using grey Portland cement for fake rocks ?

marinerules

marinerules

Gambusia
MFK Member
Oct 15, 2013
308
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18
paragould arkansas
I know people have used this and it has to cure. I have clear sealing epoxy from polygem. If I coat my completed rock with the cement with a couple layers of the sealer I shouldn't have to wait for the cure right ?


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deeda

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MFK Member
Mar 26, 2008
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Medina, Ohio
I'm not sure. Cement cures by an exothermic reaction and I think full cure is achieved in 30 days so you may have to wait at least this long.
 
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krichardson

Bronze Tier VIP
MFK Member
Jun 19, 2006
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Datnoid Island
I've been toying with the idea of using concrete to make rocks to surround my pond.I'm guessing you are considering placing the rocks in your tank?
 
marinerules

marinerules

Gambusia
MFK Member
Oct 15, 2013
308
1
18
paragould arkansas
Yea I've do e it before.

This time I have this sealing clear coat epoxy

I have cut a 6 inch pvc half way through about 20 inches long , stuck it in the oven and flattened the PVC sheet out. I then took a jigsaw and cut out a lettuce coral pattern and stuck the PVC back in the oven to make several curves and 3d look

I have one side covered in fast curing cement. I have also stamped the concrete with the texture of a real coral

I'm gonna see how this turns out


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